This amendment is prompted by reports of crankshaft failures, and by the addition of additional crankshaft serial numbers (SN) that have been added to the suspect population. Well, for one i dont think i want to take out any of the clubs planes ever again. Unfortunately, it had experienced a prop strike. 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. For example, how much propeller filing constitutes "minor dressing?" on publication in the future. Some reports are quite specific about a recent prop strike in the engines history. To start my investigation, I wanted the official definition of a prop strike. Moreover, the crank is not the only critical element in a prop-strike incident. Prop strike. These two words are guaranteed to make any pilot wince. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. Information about this document as published in the Federal Register. My investigation started with my need for another engine for my Cessna 210. documents in the last year, 28 2023 Aircraft Owners and Pilots Association, Better Together: Industry Resources Help Improve Aviation Safety. On numerous occasions, Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved If the engine was assembled new, rebuilt, or overhauled on or before March 31, 1998, or on or after April 1, 2000, no action is required. On severe prop strikes, the mounts can be easily twisted and loaded in a way that it was not designed to withstand," he says. The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. Bending loads alone are not the only destructive element, and nondestructive testing of the entire crank and associated structures is the only reasonable way to check it out. This could indicate a gear-up landing, or other source of damage that took time to fix. documents in the last year, by the Federal Communications Commission CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. This table of contents is a navigational tool, processed from the This prototype edition of the Thread starter kevmor99; Start date Sep 28, 2016; K. kevmor99 (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). The AD specifies the inspection at each engine overhaul, after a propeller strike, sudden stoppage, or whenever gear train repair is required. There used to be, but it was kind of informal and there was a lot open to interpretation. 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. Sure, some of these arguments are specious, but the point is, there's a lot of gray area, and this can cause many incidents to be ignored. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. Nitride hardened cranks have a greater tendency to crack, since the nitride hardened materials resist bending. Aircraft Owners & Pilots Association Find it free on the store. 1 in 2022, Southwest To Build Aircraft Hangar, Create 100 Jobs at Reid Airport, Boeing, United Airlines Finalize 737 MAX and 787 Order, Including Record Purchase for 100 Dreamliners. 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. TCM is less equivocal. 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. Even tip damage is considered cause for teardown electronic version on GPOs govinfo.gov. are not part of the published document itself. 600-ft lb load on the crank gear on a sudden stop from 1000 engine rpm. After defining a prop strike, TCM's SB 96-11A states: "A. Propeller strike inspections. Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. Inspect all engine accessories in accordance with the manufacturer's instructions." We can even see situations where a prop sustains a fairly nasty nick in a gravel strip, but no rpm loss occurs or serious blade damage occurs. I bought the engine and started my quest to determine what I absolutely had to do to get the airplane airworthy. 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. A. You can find the Service Bulletins for Continental Aerospace Technologies Type Certificated Gasoline Engines below. 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. 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. To comply with AD 2004-10-14, if it applies to your engine, the engine does not need to be completely disassembled and access to the accessory gear train can be accomplished, in most cases, with the engine still installed in the aircraft. Either may require additional inspection but neither may negate the inspections required by the FARs. 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. has no substantive legal effect. Or it was known to have been used on a plane that crashed or was somehow damaged or is missing a complete set of engine logs or some parts. Located in Burlington, North Carolina, we provide an array of aircraft maintenance services, including engine, cylinder, and propeller overhaul and repair. As for dialing the flange, he said TCM nitrides the crank so checking the run-out of the flange is a waste of time. documents in the last year, 534 Ken Tunnel of Lycon Aircraft Engines in Visalia, California, an engine facility used by a number of owners of show airplanes, said, "There's no way you can tell if there's any damage regardless of the circumstances. 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. You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. include documents scheduled for later issues, at the request Others will pay for all costs for the inspection and for any parts needed due to the incident. SUMMARY: The FAA is adopting a new airworthiness directive (AD) that supersedes an existing AD, for Lycoming Engines (formerly Textron Lycoming), direct-drive The $8,500 differential is not insignificant. 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. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB533A, which is dated in 1999, five years earlier than AD 2004-10-14, and four years earlier than SB 475C. Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. How about 50 rpm? Document Drafting Handbook Incidentally, I opted to overhaul the engine instead of just doing an inspection. Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. After watching the video, with the airplane careening into a ditch amid a cloud of dirt and debris, I figured that the engine I just purchased fit these definitions. Document page views are updated periodically throughout the day and are cumulative counts for this document. If it has, and there's no indication in the engine logs about a teardown and inspection, it's time for a long explanation from the seller. PROPELLER STRIKE INSPECTIONS. Say the engine is turning only 1000 rpm, barely above an idle. Engines that have been rebuilt by TCM will have a letter R at the end of the six digit numerical portion. A. Type of operator/engine makes a difference regulatory information on FederalRegister.gov with the objective of Lycoming's new SB seems to generalize the term propeller strike and sudden stoppage to be quite inclusive. They are often ignored in the prop-strike evaluation, yet they have prescribed inspection criteria even if involved in only a sudden stoppage. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day. 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. Still others will only pay for the labor to do the job and will not pay for any parts. 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 documents in the last year, 1487 AC 43.13-1B has a great deal to say about what should be done in the manner of inspections and actions, and all the statements are preceded by the word must such as following the manufacturer directives as the priority action, with emphasis on the importance of a teardown when the event meets the criteria. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. For 00-29496 Filed 11-24-00; 8:45 am], updated on 4:15 PM on Tuesday, January 17, 2023, updated on 8:45 AM on Tuesday, January 17, 2023, 142 documents I've heard that a Continental doesn't require a tear down and inspection as a Lycoming does, but looking at Continental's Service Bulletin SB96-11B it looks Home. Studies have shown that a 100-amp alternator can impose a. 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. What other services or inspections are being performed at the same time as the inspection? Mahlon Russell, production manager for Mattituck Aviation Corporation, an engine overhauler in Mattituck, NY, says, "The only pertinent FAA definition that I have been able to find for sudden stoppage' is in Advisory Circular 43.13-1A. Contact TCM to obtain additional rotobroach bits. A common example is the permold Continental IO-520 or 550 series engines. Submit comments in triplicate to the Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, Attention: Rules Docket No. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. Issued in Burlington, Massachusetts, on November 13, 2000. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further flight. Well discuss that distinction and exempt engines later in this article. 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. According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. daily Federal Register on FederalRegister.gov will remain an unofficial We see flyweights and connecting hardware, in some designs, brutalized quite frequently by sudden stoppage. continental prop strike ad. So carefully consider all factors related to propeller strikes. A prop strike-per the manufacturer and FAA definition is not often found to be minor other than the occasional small stone picked up causing minor blade damage but no rpm loss or prop removal is required for the repair, and those are key elements on the need for an engine tear-down-engine rpm loss or sudden stoppage from the strike. Also, some engines with a gear-driven alternator have a large, relatively thin and very vulnerable gear bolted to the forward end of the crankshaft. PROP STRIKE. If the engine is being disassembled does the estimate include testing after reassembly? Sun Sep 23, 2018 8:02 pm. In light of the preceding information, would you be comfortable doing that? 106(g), 40113, 44701. Section 39.13 is amended by adding the following new airworthiness directive: 2000-23-21 Teledyne Continental Motors: Amendment 39-11994. Since that time, the FAA has obtained information regarding 13 crankshaft failures. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. Use the PDF linked in the document sidebar for the official electronic format. for the aircraft owner. They either read full or At Unlimited Aero Engines we know that things happen, and happen fast. At what point after a prop strike do you need an engine teardown and inspection? 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). All crankshafts that are found to be unserviceable must be replaced with a serviceable crankshaft prior to further flight. Kiss the old days goodbye. establishing the XML-based Federal Register as an ACFR-sanctioned The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. 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. 01/17/2023, 202 To be undiplomatic, dialing in a crank after a prop strike or sudden stoppage as has been defined by both the manufacturers and the FAA is essentially a fools errand-at least as possible decision making criteria on the serviceability of the crank. 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. As for whether the inspection should be done, Anderson said he couldn't answer for anyone but himself; however, he wouldn't hesitate if it were his engine. Another problem area is in engines with crank counterweights, a very common design. Posted at 11:12h in don franklin oil change somerset ky by royal 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 the TCM internet site www.tcmlink.com. This information may be examined at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. If you need someone to remove and reinstall the engine, that's another $1,800. Secure the airplane and figure that it will be out of commission for a few months. 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. 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.". These counterweights move on relatively soft bushings. As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? This can cause major internal engine damage without visible prop damage. Engine inspection requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and intertwine. 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