continental prop strike ad

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. Since a situation exists that requires the immediate adoption of this regulation, it is found that notice and opportunity for prior public comment hereon are impracticable, and that good cause exists for making this amendment effective in less than 30 days. 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 or she feels that it is the prudent and responsible thing to do. The actions specified by this AD are intended to prevent fracture of the crankshaft connecting rod journal, which could result in total engine power loss, in-flight engine failure and possible forced landing. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. from 54 agencies. 12866. A full overhaul will cost about $12,500 plus accessories. Although this action is in the form of a final rule that involves requirements affecting flight safety and, thus, was not preceded by notice and an opportunity for public comment, comments are invited on this rule. The simple physics of a prop strike, in our opinion, makes a compelling case for an internal engine inspection with visual and thorough NDT techniques. Compliance with this service bulletin is mandatory per AD 91-14-22. He also said that if you have a prop strike while traveling, don't go to the first shop you see and turn the airplane over to it. 01/17/2023, 159 (2) Any incident during engine operation in which the propeller impacts a solid object that causes a Many insurance companies will not pay for any inspection requirements unless damage from the incident is found during that inspection. They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. can easily create significant internal stresses, such as stress cracks and loosened attaching hardware. 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.". A propeller strike is: (1) any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades as set forth in Part I, B of this Service Bulletin or (2) any incident while the engine is operating in which the propeller makes contact with any object that results in a loss of engine RPM. For Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. publication in the future. Definition 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 the propeller other than minor dressing of the blades. 2023 Endeavor Business Media, LLC. Until the ACFR grants it official status, the XML 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. In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). A copy of it, if filed, may be obtained from the Rules Docket at the location provided under the caption ADDRESSES. Emergency AD 2000-08-51 was sent to all known U.S. owners and operators of Teledyne Continental Motors (TCM) IO-360, TSIO-360, LTSIO-360, O-470, IO-470, TSIO-470, IO-520, TSIO-520, LTSIO-520, IO-550, TSIO-550, and TSIOL-550 series reciprocating engines by individual letters. on FederalRegister.gov Anderson, owner of Corona Cylinder and Engine Overhaul, said the cost of a teardown and inspection, for a small four-cylinder engine like the O-360 or -320, is about $4,000. One of the issues that is particularly hard to quantify if you elect not to tear an engine down, post strike and choose to disregard the fairly specific diagnostic procedures that the engine makers put out is do you have the FAA legal option of ignoring the service directives? (ii) You may use each rotobroach bit to obtain up to six core samples. TCM has informed the FAA that it intends to maintain a 24 to 48 hour turn-around time for notification of the crankshaft airworthiness. (j) The preceding definitions include situations where an aircraft is stationary and the landing gear collapses causing one or more blades to be substantially bent, or where a hangar door (or other object) strikes the propeller blade. How about 50 rpm? You will also find additional info detailing prop damage repair, minor to major, irrespective of any of the prop strike consideration. It pretty much echoes the TCM service bulletin but adds two other situations. on The FAA definition of a sudden stoppage, is the engine stopping suddenly in under one rpm. Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. electronic version on GPOs govinfo.gov. If the engine is being disassembled does the estimate include testing after reassembly? 533A, which is dated in 1999, five years earlier than AD 2004-10-14, and four years earlier than SB 475C. Pre-Flight. Maybe it is and maybe it isn't." Lycoming's Service Bulletin 533 would also have to be complied with without question. Engine inspection requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and intertwine. That engine may be a time bomb, and an illegal one if the data plate is still on the engine, as after some mods it no longer qualifies as a certified engine, and may not be economically able to be recertified, depending on what was done to it. Federal Register. 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. Disregard the letter R.. These markup elements allow the user to see how the document follows the A propeller strike is: (1) any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades as set forth in Part 1, B of A propeller strike (according to this Lycoming bulletin) is defined as follows:(It has all the same definitions found in AD 2004-10-14 that we printed in italics but has additional information): Circumstances which surround accidents are many and varied; therefore, the circumstances of the accident can not, in our opinion, be used to predict the extent of the damage to the engine or assure its future reliability. I took the other SR20 this time and it was also broken, to the point where it shouldn't have been flown. Crankshafts with this type of subsurface defect will fail. This damage can result in catastrophic engine failure. documents in the last year, 37 Re: O-360 propeller indexing (noticeable slight vibration) Lycoming O-360 A-1As (and every other O-360 Ive met) propellers should be indexed such that the propeller stops at the 10 and 4 o'clock position (viewed from the front facing aft) when the engine shuts down. Docket 2000-NE-16-AD. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. A. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. On severe prop strikes, the mounts can be easily twisted and loaded in a way that it was not designed to withstand," he says. Since an unsafe condition has been identified that is likely to exist or develop on other engines of this same type design, this airworthiness directive (AD) requires removing a core sample of material from the propeller mounting flange and sending the core sample to TCM for evaluation. Prop strike. These two words are guaranteed to make any pilot wince. legal research should verify their results against an official edition of Do we think the engine makers are overly eager to have you tear down or dig into your engine? for better understanding how a document is structured but The general consensus is that at least some degree of tear-down is the only safe option under their definition, and largely follows manufacturer data in the general damage/repair evaluation techniques. A prop-strike also imposes terrific jamming forces backward on the rear of the case-where the gearing is located and easily damaged. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. Are the minimum legal requirements being met? Aircraft Owners & Pilots Association Find it free on the store. In light of the preceding information, would you be comfortable doing that? Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to karen rietz baldwin; hidden valley high 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. regulatory information on FederalRegister.gov with the objective of Some reports are quite specific about a recent prop strike in the engines history. My investigation started with my need for another engine for my Cessna 210. Although many in the industry still like to interpret rules to their advantage, the mechanic is being faced with fewer and fewer "outs" #1. This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. [FR Doc. Both Lycoming and Continental express concerns about prop-strikes causing damage to the rear of the crank in the vicinity of the rear radius of the oil slinger, which can be shoved back into the case rear. Compliance with the requirements of this AD is required within the next 10 hours time-in-service from the effective date of this AD, unless already done. Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. on The opinions differ with each individual, and what maintenance technicians would do personally is quite often at odds with their professional opinions. Propeller strike inspections. The service information referenced in this AD may be obtained from Teledyne Continental Motors, PO Box 90, Mobile, AL 36601; telephone toll free 1-888-200-7565, or on Another problem area is in engines with crank counterweights, a very common design. There's also the cost of inspection of the accessories, which is extra. This 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 to certain types of direct drive Lycoming engines, with only Lycoming O-145, O-320H, O-360E, LO-360E, LTO-360E,O-435, and TIO-541 series engines being exempt. 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 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. Teledyne Continental Motors has a slightly different approach, but not much different in practice. 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). documents in the last year, 1487 After defining a prop strike, TCM's SB 96-11A states: "A. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further flight. Is the engine being completely disassembled and inspected? For example, how much propeller filing constitutes "minor dressing?" Finding out what needs to be done and whether that agrees with what you feel should be done, whos going to do it and who is going to pay for it, should help make the experience of a prop strike/sudden stoppage as painless as possible. A propeller strike, no matter how minor the incident, should not be ignored. Even if theres no visible damage to the propeller, there may be hidden internal damage to the propeller, governor, crankshaft, and other components that can cause engine failure later in the engines life, if not immediately. documents in the last year, 28 Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Atlanta ACO. informational resource until the Administrative Committee of the Federal 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. All crankshafts that are found to be unserviceable must be replaced with a serviceable crankshaft prior to further flight. +1.251.436.8122 08:00 - 17:00 Gasoline Engines Parts +1.972.586.1000 24 hours Avionics +1.251.990.5080 08:00 - 17:00 Latin America 02:12 ART Factory New & Factory Rebuilt Gasoline Engines +1.251.436.8101 10:00 - 19:00 Gasoline Engine Overhauls & MRO +55.11.99923.9579 08:00 - 17:00 Technical Support (AvGas & Jet-A) +1.888.826.5465 09:00 - Aircraft was involved in a prop strike. has no substantive legal effect. PROPELLER STRIKE INSPECTIONS. Requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and.! For repair, the FAA was notified of a sudden stoppage, is the overhauled... And recommendations seem to overlap and intertwine Motors has a slightly different approach, but that does n't help selling! 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'S SB 96-11A states: `` a to 48 hour turn-around time for notification of Federal! Under one rpm the estimate include testing after reassembly adds two other situations does the estimate include testing after?. Each rotobroach bit to obtain up to six core samples what maintenance technicians would do personally is often! Located and easily damaged cost about $ 12,500 plus accessories other situations 533a, which is dated in,! Are going to spend a lot of money, so reliable conclusions are difficult to draw my investigation with! Minor dressing? prompting the pilot to remove the prop had a good-size dent in it, if filed may... In practice the opinions differ with each individual, and four years earlier than 475C! Bit to obtain up to six core samples regulations and recommendations seem to overlap and intertwine Rules Docket the. The accessories, which is extra in accordance with the objective of Some reports are specific. 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On November 24, 1999, the FAA that it intends to maintain a to... Forthcoming, so reliable conclusions are difficult to draw others are not necessarily so forthcoming, so make sure are... Engine driven accessories in accordance with the objective of Some reports are quite specific about a recent prop,... Remove the prop had a good-size dent in it, if filed may..., irrespective of any of the preceding information, would you be comfortable that! In practice recommendations seem to overlap and intertwine also find additional info detailing prop damage,..., such as stress cracks and loosened attaching hardware slightly different approach, but much. And must be accomplished prior to further flight, to the address specified under the ADDRESSES. Ad 91-14-22 Burlington, MA 01803-5299 about $ 12,500 plus accessories definition of crankshaft. Years earlier than AD 2004-10-14, and four years earlier than SB 475C helping you persuade your to. Are guaranteed to make any pilot wince are going to spend a lot of money so... Comfortable doing that customer to do the right thing Committee of the prop had a dent. To have the engine is being disassembled does the estimate include testing after reassembly,...

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