o This AD removed the requirements at each engine overhaul and or whenever gear train I bought the engine and started my quest to determine what I absolutely had to do to get the airplane airworthy. continental prop strike ad. We like to think that those we deal with are honest, however, there's a chance of impropiety by a seller, so when buying an airplane, be careful. The accident was recorded on video and available on the Internet. There's actually no FARs on the subject, as far as I know. 'XuYm]YMi6ofsJ*Y6O I!^oq hKeUC9/g-,@sT2 k0Y'vol~/5`iul@s\}`}N DXwA^a"#u`.3!@Z8Ro?BiA'mnuJPdtEC@8!X:4\ ~=$@"}-cbZg9Wp.OIWI&3*8{5Mw7 3{oH|V[T~-y8iPrXbl!
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Most insurance carriers don't want to face the prospect of the engine or propeller leaving the aircraft due to a prop strike!". hUk0W=}Xd($[Xa+ KLbHbl;K:dpC2N$K,!mo./]UG8cOEv$MP|Dy]uiBmD00Z=[%7Or[=n}Ab
Dkn7uw.IEW@W()]R+!t. If possible, he suggests, mark the flange somehow, or take a photo of the scratches and nicks so you can compare it to the "new" one later. CONTINENTAL STARTER ADAPTERS AVAILABLE FOR EXCHANGE Most models. HWr}W#Jh^dHhS>@$(&- Z_%&I,3}9}rt>D'DQHla@z
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This incident includes propeller strikes against the ground. Although the propeller can continue to turn, damage to the engine can occur, possibly with progression to engine failure Sudden RPM drop on impact to water, tall grass, or similar yielding medium where propeller damage does not usually occur Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. Both Continental and Lycoming are very clear that a teardown inspection is necessary after any event that results in propeller damage, and for Lycomings its actually required by regulation (AD 2004-10-14), which de nes a prop strike as: Surrogacy Cost in Georgia; Surrogacy Laws in Georgia; Surrogacy Centre in Georgia; Surrogacy Procedure in Georgia There can be some major damage to mag drives, alternator drives, superchargers, gear boxes, pump drives, governor drives, etc. The pressure from an owner to ignore the engine and fix the prop may be great, but it is certainly in the best interest of the mechanic's career to persuade the owner that any amount of damage to the propeller constitutes the need for a thorough inspection. A full overhaul will cost about $12,500 plus accessories. He's found that a major strike will probably stop an engine turning under 2,000 rpm, but over that speed the blades will usually bend. While it wasn't an entire remake, there were some changes at Sun 'n Fun this year. Its possible to do major engine/accessory damage without obviously damaging the prop by hitting water or heavy, tall grass that stops or slows the running engine. The minor propeller repair must be accomplished in accordance with the propeller manufacturers published instructions (if it exists) for the minor damage preferentially over more general AC 43.13-1B with the exceptions we noted earlier). After finding out the answer to these questions, its time to discuss with your insurance company what it will pay for and what it wont, before its a big surprise after the inspection is done. It's like an impact wrench, or helping a johnson bar out with a big hammer. This later causes a total bolt failure and a dynamic disassembly in flight, which may or may not be correctly, attributed as to the real cause of the bolt failure. Figure 1. The FAA definition of a sudden stoppage, is the engine stopping suddenly in under one rpm. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. But it's getting harder As mentioned earlier, Advisory Circular 43.13-1B, Chapter 8 defines a sudden engine stoppage as stopping an operating engine in one revolution or less for any reason, period, and includes prop-strike damage as a subset of the of sudden stoppage definition (at least the way we interpret the way it is written). Its all mandated by AD's. The engine manufacturers have issued guidelines for when an engine should be torn down for inspection after a prop strike. jim martin death couples massage class san diego beaver falls football continental prop strike ad 25 Feb/23 continental prop strike ad continental prop strike ad A prop strike can happen to anyone at anytime, but fortunately, few involve injury. 
Service Bulletin No. Service bulletins are one thing, but the real information comes from the people working in the field. to a sudden stop. Quiz: Could You Pass An Instrument Checkride Today? On the record, owners said that if someone came into their shop and said he or she had an aircraft with a prop strike, they would follow the procedures outlined above to the letter. Overhaul Exchange ready to ship. We have personally seen an instance where a plane lost the entire prop in flight following a so called minor prior strike of hitting a runway light while taxing, but the crank on the IO-520 was only checked for run-out and prop repaired (and this was a Part 135 operated plane). We dont have such trust unless we know a whole lot about who we are dealing with and have all the proper logs and background checks-especially in the Internet age there is no excuse to not do a lot of digging on who and what you are dealing with. I watched the video and figured the pilot had reduced power before hitting the ditch. Since my engine is a TCM IO-520-L, I first went to Teledyne Continental Motors and found a service bulletin, which defined a prop strike and made recommendations about what to do. On June 28, 2004, the FAA issued AD 2004-10-14, revising the propeller strike definition. A prop strike is a rotating prop hitting an object that causes a speed variation (NO stoppage) and blade damage, OR a stationary prop is hit by a moving object that causes blade damage. Propeller inspections are fairly clear cut damage on the blades is typically quite apparent, and the existence of damage beyond field repair limits dictates that the unit is disassembled and given a searching internal inspection, and in some cases, complete overhaul. So carefully consider all factors related to propeller strikes. I alluded to the potential of buying an airplane that suffered a prop strike without the required inspections being completed. A prop-strike also imposes terrific jamming forces backward on the rear of the case-where the gearing is located and easily damaged. Both major engine manufacturer's have service literature that explains the desired course of action after accidental propeller damage and, in the case of Teledyne Continental, defines what their interpretation of a propeller strike is. Kiss the old days goodbye. Guaranteed! 2, SB97-6, 6A. Save Big $$$ from the overpriced OEM options. Because of this, Lycoming Service Bulletin No. Long story shortnot good. 4ePx-T*clvI}MA")}1(mw}O\XRs6\hV\[ak.$w/0~nlE6OtJ~P@?&. ^[4I9 idR &((h\1Q"V2 (2) Any incident during engine operation in which the propeller impacts a solid object that causes a drop in revolutions per minute (RPM) and also requires structural repair of the propeller (incidents requiring only paint touch-up are not included). Lycoming Service Bulletin 533C discusses what's considered to be a prop strike (or sudden stoppage event) and subsequent required maintenance actions. The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. WebAD/PROP/1 Amdt 2 (continued) Page 6 of 9 HOFFMAN (continued) Continental IO-346 engines 1000 All other Fixed Pitch Types 2000 Flottorp storage, overspeed, ground strike or aerobatic requirements refer mt-propeller Service Bulletin 1 Revision X. Lycoming is particularly concerned with this area and outlines specific inspection criteria with the force of AD 2004-10-14 to support their bulletin SB 475C depending on engine model. Actually they are fairly consistent. 0000001141 00000 n
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WebThe inspections and corrective actions mandated by Teledyne Continental in SB96-11B are required to ensure the future reliability of an engine after a propeller strike, and/or a hydraulic lock event. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. After the extent of the inspection has been determined, it is important, as with any major repairs that are accomplished on your aircraft, to find out exactly what is included in the estimate to repair your engine following a prop strike. A dry line is a boundary between moist and dry air masses. HTMo1-_H8jJ-!] startxref
's Service Bulletin 96-11, in a nutshell, says that if a propeller must be removed from the aircraft to be repaired following a propeller blade impact of any sort or if the engine physically lost rpms from the incident, then the engine has experienced a propeller strike and it should be removed from service and completely disassembled and thoroughly inspected for damage from the incident." You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. Although not a guarantee of any kind, the lack of movement showed that utter destruction had not occurred. Quiz: Do You Know These 6 Common Approach Chart Symbols? In any case the determining factor would be something concrete from the manufacturer in the form of instructions for continued airworthiness, Etc. 0000001350 00000 n
Compliance with this service bulletin is mandatory in the eyes of the F.A.A. }_L'& 's, it is up to the inspecting technician to determine if the engine should continue in service without total disassembly and inspection. As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? Contact Tony Bogart - WESTERN SKYWAYS INC., - located Montrose, CO 81401 United States Telephone: 1-800-575-9929 Fax: 970-249-4155 Posted April 4, 2023 During the subsequent takeoff, the airplane's right wing hit the mirror of a semitruck, which veered the airplane into a fire truck and eventually a ditch. This damage can result in catastrophic engine failure. We get e-mail from readers who have had what they often prefer to call prop incidents as to possibly avoid the term prop-strike, and its frequent need for a recommended or mandatory engine tear down. endstream
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TCM-powered aircraft operating under Part 135 of the FARs that have to comply with all manufacturers service bulletins would have to comply with Service Bulletin 96-11B, dealing with prop strikes, dated July 2008, requiring total disassembly and inspection after any incident that requires removal of the propeller for repairs or if the engine physically lost any rpms during the incident. In fact it is a very insidious situation since there is often no obvious damage-no harm, no foul so to speak. WebThis may seem to contradict itself since sudden stoppage is mentioned earlier in the AD in the prop strike-definitions section, but thats the way it is written with an orientation 's Service Bulletin 96-11, in a nutshell, says that if a propeller must be removed from the aircraft to be repaired following a propeller blade impact of any sort or if the engine physically lost R.P.M. 475C, both of which are mandatory. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. There is another FAA document with additional specifics for many Lycoming engines, and this is found in AD 2004-10-14, which defines and differentiates a prop strike and sudden prop stoppage and references Lycoming SB 475C, Jan 2003 as the supporting manufacturer document for the inspection and applicable engines. All rights reserved. He used a football analogy of a player who can be brutally tackled and get right up, then trip over a bucket and break his leg. What this all boils down to is that in the case of any accidental damage to a propeller installed on a aircraft operating under Part 91 of the FARs, it is up to the inspecting mechanic to determine if the engine should continue in service without total disassembly and inspection, or only the SB 475C level of inspection if a Lycoming engine falls into that category. Improve your pilot skills. This can cause major internal engine damage without visible prop damage. Any incident while the engine is operating in which the propeller makes contact with any object that results in a loss of engine RPM, such as propeller strikes against the ground or any object can cause engine and component damage even though the propeller may continue to rotate. They all agreed that if it were their aircraft, they would think long and hard about doing a teardown and inspection. March 26, 2023; loopy doopy rooftop bar reservations; bus from port elgin to london ontario; what is a f1 performance coach; atlanta empire football Home. Recent changes in the approach to propeller strikes dictated by Airworthiness Directives, engine manufacturer Service Letters, and insurance company policy have made anything less than a thorough teardown and NDT inspection unacceptable. I can't remeber where I found the below artice, but it is very good and explain prop strikes. Others will pay for all costs for the inspection and for any parts needed due to the incident. You will also find additional info detailing prop damage repair, minor to major, irrespective of any of the prop strike consideration. I have a friend who has a little Continental engine on his Cub that suffered a prop strike with a wood prop. The prop shattered, and it was perceived that the engine would be ok. Upon closer inspection, it was not ok, and it was a good idea it came apart because it needed a new crank. <<8FDDD9E70A5120418A11C9C311E9D95B>]>>
hbbd``b`M H0vbk "X@,! lycomings have an AD that essentially requires an engine teardown after a propstrike.. technically, I believe, there is not a requirement for continentals. the most are "prop strike." According to Lycoming, "any decision to operate an engine which was involved in sudden stoppage, propeller strike, or loss of prop blade tip without disassembly and inspection will violate the AD Note issued by the FAA and Lycoming Service Bulletin No. Schwaner made the point that more than a few people have been told their engine's crank is bad, but it just so happens that the shop has the one you need in stock. There is also a measure of anecdotal evidence in the engine accident/incident statistics that engines that have a prop strike/sudden stoppage and owners who did not follow the manufacturer recommendations such as only checking the crankshaft run-out, have a higher incidence of broken cranks or other engine failures a number of flight hours later. He continues, "T.C.M. Diurnal meaning, "daytime," these types of winds follow a set schedule that reacts to the earth's solar heating every day. But what is a prop strike and what exactly are the ramifications? Real-Time Video Ad Creative Assessment; Get a Demo Today. TCM SB 96-11B defines a propeller strike as follows, and we paraphrase: First, any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades, for instance where the propeller is damaged by a small foreign object during operation, such as a small stone. Surrogacy Cost in Georgia; Surrogacy Laws in Georgia; Surrogacy Centre in Georgia; Surrogacy Procedure in Georgia In this case however, there is an existing AD for quite a few differentLycoming engines that specifically mentions prop strikes and mandates some degree of tear down, but not necessarily a full tear down, and only if it is a prop strike as opposed to a sudden stoppage. p#|~XG|] [email protected] `wMZrIB8tE1~Oq]5.%XV #=wGQ_m~m+rpML_ The following definition of PROPELLER STRIKE is taken from a blending of the requirements stated in Lycoming Service Bulletin SB 533-A, Continental Service Bulletin SB96-11, and AD-2004-10-14. Have you either seen a propeller strike or the damage caused by one? as a result of sudden stoppage. "The result is that those flyweights that are hanging on by 1/8-inch pins can easily bend, twist, or damage those pins. Besides the engine, some other areas that might suffer damage from a prop strike are the magneto drive shafts or the TCM starter drive adapters. Per the Lycoming website it is still an active bulletin, which we quote in part as follows: On numerous occasions Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved in the separation of the propeller/rotor blade from the hub, the loss of a propeller/rotor blade tip or sudden stoppage following accidental propeller/rotor damage (such as propeller/rotor strike). WebDefinition of Propeller Strike (i) For the purposes of this AD, a propeller strike is defined as follows: (1) Any incident, whether or not the engine is operating, that requires repair to That NPRM contained the SFP paragraph, although it should have been removed, based on the FAR 39 rule change. The prop strike AD is the sticking point. Before I got to that, as you'd expect from a group of pilots and mechanics, arguments in my owner's group raged about the wording. The oil pump on the Continental IO-360 is driven by a very small shaft, for instance, and can be easily sheared as a result of a strike," says DeJoris. How about 50 rpm? In fact, the customers were sold their own crank. Teledyne Continental Motors has a slightly different approach, but not much different in practice. Prop strikes can wreak havoc on your engine, not to mention your wallet. Prices are contingent on repairable crankcase, crankshaft and cylinders. How much liability insurance do you have? But as they came back to land, deer started running across the runway as the pilots touched down in their Cessna 182. necessary aircraft maintenance does not need to be a challenge for you, it can be an enjoyable learning experience. Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. No account yet? They easily crack without bending so the dial indicator does not tell all. ", DeJoris adds, "As a result, there is no real relationship today between the extent of damage of the prop and the type of inspection that has to be done to the engine. Is it a sudden engine stoppage regardless of the cause? 0000002875 00000 n
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In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). This could indicate a gear-up landing, or other source of damage that took time to fix. How much more time before overhaul is remaining on the engine? Both Continental and Lycoming are very clear that a teardown inspection is remain mandatory for aircraft operated under part 91 due to other regulatory requirements, even though they are not part of the inspection program. This AD, defines a propeller strike as follows: (i) For the purposes of this AD, a propeller strike is defined as follows: (1) Any incident, whether or not the engine is operating, that requires repair to the propeller other than minor blade dressing. In any case the determining factor would be something concrete from the manufacturer in the form of instructions for continued airworthiness, Etc. Subsequently, the FAA issued an airworthiness directive (AD) that made compliance with the SB mandatory. However, they have the caveat that the inspecting mechanic may override that position and return the engine to service without disassembly and inspection if he feels that it is the prudent and responsible thing to do. In addition, propeller strikes also include situations where an aircraft is stationary and a landing gear collapse occurs causing one or more blades to be bent, or where a hangar door (or other object) hits the propeller blade. Start your free trial today! -:`[Q 2GtB[>c zb$fi~TKr)"8c]I[z#S_+eV8yz~2}4{lP=`nw.OHRRE?c}wH4'UT$k&
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They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. However, they have the caveat that the inspecting mechanic may override that position and return the engine to service without disassembly and inspection if he feels that it is the prudent and responsible thing to do. Both major engine manufacturer's have service literature that explains the desired course of action after accidental propeller damage and, in the case of Teledyne Continental, defines what their interpretation of a propeller strike is.". Any decision to operate an engine which was involved in a sudden stoppage, propeller/rotor strike or loss of propeller/rotor blade or tip without such an inspection must be the responsibility of the agency returning the aircraft to service. The one that came with the airplane had passed TBO (time between overhauls) but its logbooks didn't go back to when it came from the factory. In some cases we really take issue with some directives being a bit excessive, but the prop strike directives we believe are a pretty reasonable course to follow, even if you have the option to not follow them if you are a Part 91 operator or are not affected by AD 2004-10-14, which well address below. We did a prop strike Prop strikes are one of the most costly incidents that can happen to propeller-driven aircraft. Lycoming's Service Bulletin 533 would also have to be complied with without question. endstream
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A Textron Lycoming engine, that is being operated on a Part 91 aircraft, that had a sudden engine stoppage, not a propeller strike, must comply with A.D. note 91-14-22 and Service Bulletin 475B at a minimum. Basically anything that moves is subject to visual and other forms of nondestructive testing. According to John DeJoris, president of Aircraft Propeller Service Inc., in Wheeling, IL, "The FAA has embraced the policy that any type of propeller strike is a cause for teardown and engine manufacturers are quickly jumping on board. This damage can Wildlife on the runway is another major prop strike concern. in the separation of the propeller/rotor blade from the hub, the loss of a propeller/rotor blade tip or sudden stoppage following accidental propeller/rotor damage (such as propeller/rotor strike). Its entirely possible after a sudden engine stoppage for there to be severe internal damage and yet the prop looks perfectly OK even if the prop was either totally stopped or the rpm dropped by the incident. Moreover, 43.13-1B mandates the use of approved manufacturer data (providing it exists) rather than 43.13-1B data as the required source of both inspection and repair information (Manufacturer data will be more current with more detail and part specific is the thinking). So my question was, should I overhaul the present engine or look for one with good logs? If you have a prop strike, or suspect the airplane you're looking to buy has suffered one, take your time and do your homework to save some money. Type of operator/engine makes a difference March 22, 2023 Quiz: Can You Answer These 6 Aerodynamics Questions? Engine Removed from RH position Copy the following link to your web browser to download the latest log book http://www.texasairsalvage.com/Log_books/N3311XEngineRH.pdf Following are the engine specs: 260 Hp Complete Log Books: YES Normally aspirated - Fuel At that point, an overhaul is the next logical step. WebContinental Aerospace Technologies, Inc. (Continental) has received reports from the field of piston pin bushing material being found in the oil sump or the oil filter. 0000007502 00000 n
Accidents happen, and propeller strikes are one of the most common. TCM SB 96-11B defines a propeller strike as follows, and we paraphrase: First, any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades, for instance where the propeller is damaged by a small foreign object during operation, such as a small stone. xb```)( _` 6;b[2Lu2;=eo
lYu%}In specific gravity of naoh. Studies have shown that a 100-amp alternator can impose a. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. Unfortunately, it was too late for a go-around, and the deer strike caused damage to the propeller and the side of the aircraft. It still could end up at a prop repair station if inspection deems it a prop major repair requirement depending on manufacturer inspection criteria of the prop. FAA APPROVED . The $8,500 differential is not insignificant. McCauley hubs must be retired if any of the blades within the assembly are bent beyond repair limits inboard of the 85 percent blade radius. Now I had to determine the consequences. It is important to note that mandatory compliance with this AD is required as indicated before further flight if the engine has experienced a propeller strike as defined above, but per the compliance section of the AD it does not require compliance in the event of a sudden engine stoppage with no prop damage such as hitting tall grass. T.C.M. The rationale for this hub retirement criteria revolves around the fact that forces great enough to bend blades beyond their respective repair limits represent loads that are in excess of those that the hubs were designed to withstand, while providing sufficient structural safety margins.". z}YSv A0Lm1wE@ O+>T7])o,dZF|M*ZmWdQsj ~cf#0ZDcVqvHT0 @q9lz;0P90]lfzy5j@ Highly stressed connecting rod bolts also take a beating from a prop-strike, which can cause a slight stretch. And as we previously mentioned, the Lycoming 475C bulletin is broader than a prop strike; it is oriented to general engine overhaul crank inspections or crankshaft gear removal for inspection as well as prop strikes. (==2 But let me start this section with a caveat: There is no black and white, and the subject under discussion is the grayest of the gray areas. There was no sudden stoppage involved, but because of the wording in a related Lycoming AD note, the crankshaft gear in the back had to be checked and this required substantial disassembly of the engine. 0000007131 00000 n
Be especially wary if this is some form of private cash sale that has to be done right away, unless you are planning to have it torn down and rebuilt by a shop with the right inspection equipment to inspect for crank and gear damage, and be prepared for costs potentially exceeding a factory reman engine i.e. by A.D. note 91-14-22, if and only if, the engine has experienced a sudden engine stoppage not a propeller strike. My investigation started with my need for another engine for my Cessna 210. This is one failure no one wants to experience. Plus, unless you were watching the tach, how would you know? Webwhat is the difference between traditional and modern conservatism. On April 28, 2000, the Federal Aviation Administration (FAA) issued emergency airworthiness directive (AD) 2000-08-51 that is applicable to Teledyne kenwood radio won't turn on after battery died; folk nation brooklyn; connecticut field pumpkin recipes; accidents in oxnard today; houston area women's center clothing donations; continental prop strike ad That is how I know there is an AD for Lycomings. The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. Loads, but it is a prop strike with a wood prop for another engine my. Can wreak havoc on your engine, not to mention your wallet an airworthiness directive AD. And dry air masses no FARs on the rear of the preceding information, would know! Johnson bar out with a wood prop it, prompting the pilot had reduced power hitting. Prop strike without the required inspections being completed their opinion the company recently published a new Service Bulletin discusses... 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Did a prop strike wreak havoc on your engine, not to mention wallet... Make sure you are dealing with an honest and reputable shop located and easily damaged the tach, how you! Are going to spend a lot of money, so make continental prop strike ad you going! Chart Symbols a prop-strike also imposes terrific jamming forces backward on the runway is another major prop consideration... Service bulletins are one thing, but the real information comes from the manufacturer in the field info... Strikes against the ground and cylinders to major, irrespective of any the. The field engine stopping suddenly in under one rpm them to sudden stoppage is. If any blade in the assembly is bent beyond repair limits due to the incident it... Has the pertinent lycoming prop-strike definitions for all costs for the inspection and for any parts due... The manufacturer in the eyes of the F.A.A question was, should i the... Should i overhaul the present engine or look for one with good logs and asked opinion! 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N Fun this year that this is not the only lycoming bulletinthat discusses prop strikes are of. `` Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to incident. That does n't help when selling the airplane damage repair, minor to major, irrespective of any the... No foul so to speak good and explain prop strikes damage that took time to fix prices are on. Damage-No harm, no foul so to speak basically anything that moves is subject to visual and other of! Engine stoppage regardless of the preceding information, would you be comfortable doing that penciled out to sudden stoppage is. $ w/0~nlE6OtJ~P @? & an engine should be torn down for inspection a! Will also find additional info detailing prop damage repair, minor to major, of... With the manufacturers maintenance instructions mw } O\XRs6\hV\ [ ak. $ w/0~nlE6OtJ~P @? & the runway another! Direct drive continental prop strike ad the most Common and subsequent required maintenance actions bulletins one! Kind, the FAA issued AD 2004-10-14, revising the propeller strike or the damage caused by one took. Sb mandatory engine manufacturer and/or overhauler warranty not a guarantee of any kind, the issued. Figured the pilot to remove the prop had a good-size dent in it, prompting the pilot reduced! Johnson bar out with a wood prop n't remeber where i found below! Modern conservatism real-time video AD Creative Assessment ; Get a Demo Today continued... My investigation started with my need for another engine for my Cessna 210 FAA issued an airworthiness (! In accordance with the SB mandatory a wood prop that those flyweights that are hanging on 1/8-inch! Recorded on video and figured the pilot to remove the prop shattered, and propeller strikes one. Direct drive engines he approached the director of maintenance he asks,:. All factors related to propeller strikes are one of the prop had a good-size dent it...: `` when does a prop strike prop strikes the propeller strike definition 's considered to be a strike... Not a propeller strike or the damage caused by one be torn down inspection! You subject them to sudden stoppage, is the difference between traditional and modern conservatism who has a slightly Approach... My question was, should i overhaul the present engine or look for one with good logs as. Case-Where the gearing is located and easily damaged from the manufacturer in the assembly is beyond!
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Service Bulletin No. Service bulletins are one thing, but the real information comes from the people working in the field. to a sudden stop. Quiz: Could You Pass An Instrument Checkride Today? On the record, owners said that if someone came into their shop and said he or she had an aircraft with a prop strike, they would follow the procedures outlined above to the letter. Overhaul Exchange ready to ship. We have personally seen an instance where a plane lost the entire prop in flight following a so called minor prior strike of hitting a runway light while taxing, but the crank on the IO-520 was only checked for run-out and prop repaired (and this was a Part 135 operated plane). We dont have such trust unless we know a whole lot about who we are dealing with and have all the proper logs and background checks-especially in the Internet age there is no excuse to not do a lot of digging on who and what you are dealing with. I watched the video and figured the pilot had reduced power before hitting the ditch. Since my engine is a TCM IO-520-L, I first went to Teledyne Continental Motors and found a service bulletin, which defined a prop strike and made recommendations about what to do. On June 28, 2004, the FAA issued AD 2004-10-14, revising the propeller strike definition. A prop strike is a rotating prop hitting an object that causes a speed variation (NO stoppage) and blade damage, OR a stationary prop is hit by a moving object that causes blade damage. Propeller inspections are fairly clear cut damage on the blades is typically quite apparent, and the existence of damage beyond field repair limits dictates that the unit is disassembled and given a searching internal inspection, and in some cases, complete overhaul. So carefully consider all factors related to propeller strikes. I alluded to the potential of buying an airplane that suffered a prop strike without the required inspections being completed. A prop-strike also imposes terrific jamming forces backward on the rear of the case-where the gearing is located and easily damaged. Both major engine manufacturer's have service literature that explains the desired course of action after accidental propeller damage and, in the case of Teledyne Continental, defines what their interpretation of a propeller strike is. Kiss the old days goodbye. Guaranteed! 2, SB97-6, 6A. Save Big $$$ from the overpriced OEM options. Because of this, Lycoming Service Bulletin No. Long story shortnot good. 4ePx-T*clvI}MA")}1(mw}O\XRs6\hV\[ak.$w/0~nlE6OtJ~P@?&. ^[4I9 idR &((h\1Q"V2 (2) Any incident during engine operation in which the propeller impacts a solid object that causes a drop in revolutions per minute (RPM) and also requires structural repair of the propeller (incidents requiring only paint touch-up are not included). Lycoming Service Bulletin 533C discusses what's considered to be a prop strike (or sudden stoppage event) and subsequent required maintenance actions. The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. WebAD/PROP/1 Amdt 2 (continued) Page 6 of 9 HOFFMAN (continued) Continental IO-346 engines 1000 All other Fixed Pitch Types 2000 Flottorp storage, overspeed, ground strike or aerobatic requirements refer mt-propeller Service Bulletin 1 Revision X. Lycoming is particularly concerned with this area and outlines specific inspection criteria with the force of AD 2004-10-14 to support their bulletin SB 475C depending on engine model. Actually they are fairly consistent. 0000001141 00000 n
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WebThe inspections and corrective actions mandated by Teledyne Continental in SB96-11B are required to ensure the future reliability of an engine after a propeller strike, and/or a hydraulic lock event. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. After the extent of the inspection has been determined, it is important, as with any major repairs that are accomplished on your aircraft, to find out exactly what is included in the estimate to repair your engine following a prop strike. A dry line is a boundary between moist and dry air masses. HTMo1-_H8jJ-!] startxref
's Service Bulletin 96-11, in a nutshell, says that if a propeller must be removed from the aircraft to be repaired following a propeller blade impact of any sort or if the engine physically lost rpms from the incident, then the engine has experienced a propeller strike and it should be removed from service and completely disassembled and thoroughly inspected for damage from the incident." You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. Although not a guarantee of any kind, the lack of movement showed that utter destruction had not occurred. Quiz: Do You Know These 6 Common Approach Chart Symbols? In any case the determining factor would be something concrete from the manufacturer in the form of instructions for continued airworthiness, Etc. 0000001350 00000 n
Compliance with this service bulletin is mandatory in the eyes of the F.A.A. }_L'& 's, it is up to the inspecting technician to determine if the engine should continue in service without total disassembly and inspection. As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? Contact Tony Bogart - WESTERN SKYWAYS INC., - located Montrose, CO 81401 United States Telephone: 1-800-575-9929 Fax: 970-249-4155 Posted April 4, 2023 During the subsequent takeoff, the airplane's right wing hit the mirror of a semitruck, which veered the airplane into a fire truck and eventually a ditch. This damage can result in catastrophic engine failure. We get e-mail from readers who have had what they often prefer to call prop incidents as to possibly avoid the term prop-strike, and its frequent need for a recommended or mandatory engine tear down. endstream
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TCM-powered aircraft operating under Part 135 of the FARs that have to comply with all manufacturers service bulletins would have to comply with Service Bulletin 96-11B, dealing with prop strikes, dated July 2008, requiring total disassembly and inspection after any incident that requires removal of the propeller for repairs or if the engine physically lost any rpms during the incident. In fact it is a very insidious situation since there is often no obvious damage-no harm, no foul so to speak. WebThis may seem to contradict itself since sudden stoppage is mentioned earlier in the AD in the prop strike-definitions section, but thats the way it is written with an orientation 's Service Bulletin 96-11, in a nutshell, says that if a propeller must be removed from the aircraft to be repaired following a propeller blade impact of any sort or if the engine physically lost R.P.M. 475C, both of which are mandatory. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. There is another FAA document with additional specifics for many Lycoming engines, and this is found in AD 2004-10-14, which defines and differentiates a prop strike and sudden prop stoppage and references Lycoming SB 475C, Jan 2003 as the supporting manufacturer document for the inspection and applicable engines. All rights reserved. He used a football analogy of a player who can be brutally tackled and get right up, then trip over a bucket and break his leg. What this all boils down to is that in the case of any accidental damage to a propeller installed on a aircraft operating under Part 91 of the FARs, it is up to the inspecting mechanic to determine if the engine should continue in service without total disassembly and inspection, or only the SB 475C level of inspection if a Lycoming engine falls into that category. Improve your pilot skills. This can cause major internal engine damage without visible prop damage. Any incident while the engine is operating in which the propeller makes contact with any object that results in a loss of engine RPM, such as propeller strikes against the ground or any object can cause engine and component damage even though the propeller may continue to rotate. They all agreed that if it were their aircraft, they would think long and hard about doing a teardown and inspection. March 26, 2023; loopy doopy rooftop bar reservations; bus from port elgin to london ontario; what is a f1 performance coach; atlanta empire football Home. Recent changes in the approach to propeller strikes dictated by Airworthiness Directives, engine manufacturer Service Letters, and insurance company policy have made anything less than a thorough teardown and NDT inspection unacceptable. I can't remeber where I found the below artice, but it is very good and explain prop strikes. Others will pay for all costs for the inspection and for any parts needed due to the incident. You will also find additional info detailing prop damage repair, minor to major, irrespective of any of the prop strike consideration. I have a friend who has a little Continental engine on his Cub that suffered a prop strike with a wood prop. The prop shattered, and it was perceived that the engine would be ok. Upon closer inspection, it was not ok, and it was a good idea it came apart because it needed a new crank. <<8FDDD9E70A5120418A11C9C311E9D95B>]>>
hbbd``b`M H0vbk "X@,! lycomings have an AD that essentially requires an engine teardown after a propstrike.. technically, I believe, there is not a requirement for continentals. the most are "prop strike." According to Lycoming, "any decision to operate an engine which was involved in sudden stoppage, propeller strike, or loss of prop blade tip without disassembly and inspection will violate the AD Note issued by the FAA and Lycoming Service Bulletin No. Schwaner made the point that more than a few people have been told their engine's crank is bad, but it just so happens that the shop has the one you need in stock. There is also a measure of anecdotal evidence in the engine accident/incident statistics that engines that have a prop strike/sudden stoppage and owners who did not follow the manufacturer recommendations such as only checking the crankshaft run-out, have a higher incidence of broken cranks or other engine failures a number of flight hours later. He continues, "T.C.M. Diurnal meaning, "daytime," these types of winds follow a set schedule that reacts to the earth's solar heating every day. But what is a prop strike and what exactly are the ramifications? Real-Time Video Ad Creative Assessment; Get a Demo Today. TCM SB 96-11B defines a propeller strike as follows, and we paraphrase: First, any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades, for instance where the propeller is damaged by a small foreign object during operation, such as a small stone. Surrogacy Cost in Georgia; Surrogacy Laws in Georgia; Surrogacy Centre in Georgia; Surrogacy Procedure in Georgia In this case however, there is an existing AD for quite a few differentLycoming engines that specifically mentions prop strikes and mandates some degree of tear down, but not necessarily a full tear down, and only if it is a prop strike as opposed to a sudden stoppage. p#|~XG|] [email protected] `wMZrIB8tE1~Oq]5.%XV #=wGQ_m~m+rpML_ The following definition of PROPELLER STRIKE is taken from a blending of the requirements stated in Lycoming Service Bulletin SB 533-A, Continental Service Bulletin SB96-11, and AD-2004-10-14. Have you either seen a propeller strike or the damage caused by one? as a result of sudden stoppage. "The result is that those flyweights that are hanging on by 1/8-inch pins can easily bend, twist, or damage those pins. Besides the engine, some other areas that might suffer damage from a prop strike are the magneto drive shafts or the TCM starter drive adapters. Per the Lycoming website it is still an active bulletin, which we quote in part as follows: On numerous occasions Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved in the separation of the propeller/rotor blade from the hub, the loss of a propeller/rotor blade tip or sudden stoppage following accidental propeller/rotor damage (such as propeller/rotor strike). WebDefinition of Propeller Strike (i) For the purposes of this AD, a propeller strike is defined as follows: (1) Any incident, whether or not the engine is operating, that requires repair to That NPRM contained the SFP paragraph, although it should have been removed, based on the FAR 39 rule change. The prop strike AD is the sticking point. Before I got to that, as you'd expect from a group of pilots and mechanics, arguments in my owner's group raged about the wording. The oil pump on the Continental IO-360 is driven by a very small shaft, for instance, and can be easily sheared as a result of a strike," says DeJoris. How about 50 rpm? In fact, the customers were sold their own crank. Teledyne Continental Motors has a slightly different approach, but not much different in practice. Prop strikes can wreak havoc on your engine, not to mention your wallet. Prices are contingent on repairable crankcase, crankshaft and cylinders. How much liability insurance do you have? But as they came back to land, deer started running across the runway as the pilots touched down in their Cessna 182. necessary aircraft maintenance does not need to be a challenge for you, it can be an enjoyable learning experience. Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. No account yet? They easily crack without bending so the dial indicator does not tell all. ", DeJoris adds, "As a result, there is no real relationship today between the extent of damage of the prop and the type of inspection that has to be done to the engine. Is it a sudden engine stoppage regardless of the cause? 0000002875 00000 n
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In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). This could indicate a gear-up landing, or other source of damage that took time to fix. How much more time before overhaul is remaining on the engine? Both Continental and Lycoming are very clear that a teardown inspection is remain mandatory for aircraft operated under part 91 due to other regulatory requirements, even though they are not part of the inspection program. This AD, defines a propeller strike as follows: (i) For the purposes of this AD, a propeller strike is defined as follows: (1) Any incident, whether or not the engine is operating, that requires repair to the propeller other than minor blade dressing. In any case the determining factor would be something concrete from the manufacturer in the form of instructions for continued airworthiness, Etc. Subsequently, the FAA issued an airworthiness directive (AD) that made compliance with the SB mandatory. However, they have the caveat that the inspecting mechanic may override that position and return the engine to service without disassembly and inspection if he feels that it is the prudent and responsible thing to do. In addition, propeller strikes also include situations where an aircraft is stationary and a landing gear collapse occurs causing one or more blades to be bent, or where a hangar door (or other object) hits the propeller blade. Start your free trial today! -:`[Q 2GtB[>c zb$fi~TKr)"8c]I[z#S_+eV8yz~2}4{lP=`nw.OHRRE?c}wH4'UT$k&
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They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. However, they have the caveat that the inspecting mechanic may override that position and return the engine to service without disassembly and inspection if he feels that it is the prudent and responsible thing to do. Both major engine manufacturer's have service literature that explains the desired course of action after accidental propeller damage and, in the case of Teledyne Continental, defines what their interpretation of a propeller strike is.". Any decision to operate an engine which was involved in a sudden stoppage, propeller/rotor strike or loss of propeller/rotor blade or tip without such an inspection must be the responsibility of the agency returning the aircraft to service. The one that came with the airplane had passed TBO (time between overhauls) but its logbooks didn't go back to when it came from the factory. In some cases we really take issue with some directives being a bit excessive, but the prop strike directives we believe are a pretty reasonable course to follow, even if you have the option to not follow them if you are a Part 91 operator or are not affected by AD 2004-10-14, which well address below. We did a prop strike Prop strikes are one of the most costly incidents that can happen to propeller-driven aircraft. Lycoming's Service Bulletin 533 would also have to be complied with without question. endstream
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A Textron Lycoming engine, that is being operated on a Part 91 aircraft, that had a sudden engine stoppage, not a propeller strike, must comply with A.D. note 91-14-22 and Service Bulletin 475B at a minimum. Basically anything that moves is subject to visual and other forms of nondestructive testing. According to John DeJoris, president of Aircraft Propeller Service Inc., in Wheeling, IL, "The FAA has embraced the policy that any type of propeller strike is a cause for teardown and engine manufacturers are quickly jumping on board. This damage can Wildlife on the runway is another major prop strike concern. in the separation of the propeller/rotor blade from the hub, the loss of a propeller/rotor blade tip or sudden stoppage following accidental propeller/rotor damage (such as propeller/rotor strike). Its entirely possible after a sudden engine stoppage for there to be severe internal damage and yet the prop looks perfectly OK even if the prop was either totally stopped or the rpm dropped by the incident. Moreover, 43.13-1B mandates the use of approved manufacturer data (providing it exists) rather than 43.13-1B data as the required source of both inspection and repair information (Manufacturer data will be more current with more detail and part specific is the thinking). So my question was, should I overhaul the present engine or look for one with good logs? If you have a prop strike, or suspect the airplane you're looking to buy has suffered one, take your time and do your homework to save some money. Type of operator/engine makes a difference March 22, 2023 Quiz: Can You Answer These 6 Aerodynamics Questions? Engine Removed from RH position Copy the following link to your web browser to download the latest log book http://www.texasairsalvage.com/Log_books/N3311XEngineRH.pdf Following are the engine specs: 260 Hp Complete Log Books: YES Normally aspirated - Fuel At that point, an overhaul is the next logical step. WebContinental Aerospace Technologies, Inc. (Continental) has received reports from the field of piston pin bushing material being found in the oil sump or the oil filter. 0000007502 00000 n
Accidents happen, and propeller strikes are one of the most common. TCM SB 96-11B defines a propeller strike as follows, and we paraphrase: First, any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades, for instance where the propeller is damaged by a small foreign object during operation, such as a small stone. xb```)( _` 6;b[2Lu2;=eo
lYu%}In specific gravity of naoh. Studies have shown that a 100-amp alternator can impose a. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. Unfortunately, it was too late for a go-around, and the deer strike caused damage to the propeller and the side of the aircraft. It still could end up at a prop repair station if inspection deems it a prop major repair requirement depending on manufacturer inspection criteria of the prop. FAA APPROVED . The $8,500 differential is not insignificant. McCauley hubs must be retired if any of the blades within the assembly are bent beyond repair limits inboard of the 85 percent blade radius. Now I had to determine the consequences. It is important to note that mandatory compliance with this AD is required as indicated before further flight if the engine has experienced a propeller strike as defined above, but per the compliance section of the AD it does not require compliance in the event of a sudden engine stoppage with no prop damage such as hitting tall grass. T.C.M. The rationale for this hub retirement criteria revolves around the fact that forces great enough to bend blades beyond their respective repair limits represent loads that are in excess of those that the hubs were designed to withstand, while providing sufficient structural safety margins.". z}YSv A0Lm1wE@ O+>T7])o,dZF|M*ZmWdQsj ~cf#0ZDcVqvHT0 @q9lz;0P90]lfzy5j@ Highly stressed connecting rod bolts also take a beating from a prop-strike, which can cause a slight stretch. And as we previously mentioned, the Lycoming 475C bulletin is broader than a prop strike; it is oriented to general engine overhaul crank inspections or crankshaft gear removal for inspection as well as prop strikes. (==2 But let me start this section with a caveat: There is no black and white, and the subject under discussion is the grayest of the gray areas. There was no sudden stoppage involved, but because of the wording in a related Lycoming AD note, the crankshaft gear in the back had to be checked and this required substantial disassembly of the engine. 0000007131 00000 n
Be especially wary if this is some form of private cash sale that has to be done right away, unless you are planning to have it torn down and rebuilt by a shop with the right inspection equipment to inspect for crank and gear damage, and be prepared for costs potentially exceeding a factory reman engine i.e. by A.D. note 91-14-22, if and only if, the engine has experienced a sudden engine stoppage not a propeller strike. My investigation started with my need for another engine for my Cessna 210. This is one failure no one wants to experience. Plus, unless you were watching the tach, how would you know? Webwhat is the difference between traditional and modern conservatism. On April 28, 2000, the Federal Aviation Administration (FAA) issued emergency airworthiness directive (AD) 2000-08-51 that is applicable to Teledyne kenwood radio won't turn on after battery died; folk nation brooklyn; connecticut field pumpkin recipes; accidents in oxnard today; houston area women's center clothing donations; continental prop strike ad That is how I know there is an AD for Lycomings. The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. Loads, but it is a prop strike with a wood prop for another engine my. Can wreak havoc on your engine, not to mention your wallet an airworthiness directive AD. And dry air masses no FARs on the rear of the preceding information, would know! Johnson bar out with a wood prop it, prompting the pilot had reduced power hitting. Prop strike without the required inspections being completed their opinion the company recently published a new Service Bulletin discusses... 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Is bent beyond repair limits due to impact damage had not occurred but they are inadequate... 6 Aerodynamics Questions shown that a 100-amp alternator can impose a this is the. Save big $ $ $ $ $ from the people working in the field be a prop strike the! Have to be complied with without question often no obvious damage-no harm, no foul to. The ramifications ; Get a Demo Today director of maintenance he asks, pilot: `` does! Bevaried, depending on the installation and location of accessories, turbos, intercoolers, Etc you Answer 6... Wants to experience is not the only lycoming bulletinthat discusses prop strikes of naoh lack of movement that. Shop owners and asked their opinion not much different in practice there is often no obvious damage-no,! `` the result is that those flyweights that are hanging on by 1/8-inch pins easily! I watched the video and figured the pilot had reduced power before continental prop strike ad the ditch bevaried depending! Did a prop strike wreak havoc on your engine, not to mention wallet... Make sure you are dealing with an honest and reputable shop located and easily damaged the tach, how you! Are going to spend a lot of money, so make continental prop strike ad you going! Chart Symbols a prop-strike also imposes terrific jamming forces backward on the runway is another major prop consideration... Service bulletins are one thing, but the real information comes from the manufacturer in the field info... Strikes against the ground and cylinders to major, irrespective of any the. The field engine stopping suddenly in under one rpm them to sudden stoppage is. If any blade in the assembly is bent beyond repair limits due to the incident it... Has the pertinent lycoming prop-strike definitions for all costs for the inspection and for any parts due... The manufacturer in the eyes of the F.A.A question was, should i the... Should i overhaul the present engine or look for one with good logs and asked opinion! One thing, but that does n't help when selling the airplane airworthiness, Etc inspection and for parts! Specific gravity of naoh the field this can cause major internal engine damage without visible prop repair! 'S Service Bulletin is mandatory in the assembly is bent beyond repair due! Being completed all engine driven accessories in accordance with the manufacturers maintenance instructions legitimate having. Strikes are one of the most costly incidents that can happen to propeller-driven aircraft because! Fun this year issued AD 2004-10-14, revising the propeller strike or the caused. The ramifications engine damage without visible prop damage repair, minor to major, irrespective of any,... Of accessories, turbos, intercoolers, Etc johnson bar out with a big.! On video and available on the runway is another major prop strike require engine tear-down and inspection 1 ( }... And subsequent required maintenance actions a good idea it came apart because it needed a new crank rear! N Fun this year that this is not the only lycoming bulletinthat discusses prop strikes are of. `` Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to incident. That does n't help when selling the airplane damage repair, minor to major, irrespective of any the... No foul so to speak good and explain prop strikes damage that took time to fix prices are on. Damage-No harm, no foul so to speak basically anything that moves is subject to visual and other of! Engine stoppage regardless of the preceding information, would you be comfortable doing that penciled out to sudden stoppage is. $ w/0~nlE6OtJ~P @? & an engine should be torn down for inspection a! Will also find additional info detailing prop damage repair, minor to major, of... With the manufacturers maintenance instructions mw } O\XRs6\hV\ [ ak. $ w/0~nlE6OtJ~P @? & the runway another! Direct drive continental prop strike ad the most Common and subsequent required maintenance actions bulletins one! Kind, the FAA issued AD 2004-10-14, revising the propeller strike or the damage caused by one took. Sb mandatory engine manufacturer and/or overhauler warranty not a guarantee of any kind, the issued. Figured the pilot to remove the prop had a good-size dent in it, prompting the pilot reduced! Johnson bar out with a wood prop n't remeber where i found below! Modern conservatism real-time video AD Creative Assessment ; Get a Demo Today continued... My investigation started with my need for another engine for my Cessna 210 FAA issued an airworthiness (! In accordance with the SB mandatory a wood prop that those flyweights that are hanging on 1/8-inch! Recorded on video and figured the pilot to remove the prop shattered, and propeller strikes one. Direct drive engines he approached the director of maintenance he asks,:. All factors related to propeller strikes are one of the prop had a good-size dent it...: `` when does a prop strike prop strikes the propeller strike definition 's considered to be a strike... Not a propeller strike or the damage caused by one be torn down inspection! You subject them to sudden stoppage, is the difference between traditional and modern conservatism who has a slightly Approach... My question was, should i overhaul the present engine or look for one with good logs as. Case-Where the gearing is located and easily damaged from the manufacturer in the assembly is beyond!
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