Sun Sep 23, 2018 8:02 pm. 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. (ii) If TCM notifies you that the crankshaft is serviceable, the propeller assembly may be reinstalled. Always rely on the FAA certified inspecting technician, applicable service data and the FARs to dictate how thorough an inspection is necessary to continue the engine in service. Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. 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. These markup elements allow the user to see how the document follows the The engine for sale was the model I needed, with about 1,000 hours since a factory overhaul. The bulletin reads as follows: Studies have shown that a 100-amp alternator can impose a. Until the ACFR grants it official status, the XML We will not be discussing damage to the prop in this article since there is so much information on prop damage that does not involve engine tear downs. 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." Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. And anyway, who needs NOTAMs? Consider the accessories. (c) Crankshaft material inspections (crankshaft propeller flange core samples) that were done using TCM MSB 00-5, dated April 14, 2000; MSB 00-5A, dated April 28, 2000; or MSB 00-5B, dated May 25, 2000, comply with this AD and must not be repeated. 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. 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. Lycoming 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. (3) A sudden RPM drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred. A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. When a prop strike incident occured, standard industry accesptance was to have the mechanic remove the propeller and dial indicator, "or check the crankshaft flange for being out of limits." documents in the last year, by the Veterans Affairs Department Sticking with a certified repair facility possessing all the skills and tools will probably reduce the extra shipping costs and time involved to get individual parts examined seems most efficient to us. So my question was, should I overhaul the present engine or look for one with good logs? We know of no ADs on TCM engines in this area to muddy the waters, so its the owners decision unless they are operating other than under Part 91, such as Part 135 where compliance with service directives is typically mandatory. How about 50 rpm? Are there any hidden costs? 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. All crankshafts that are found to be unserviceable must be replaced with a serviceable crankshaft prior to further flight. on 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 01/17/2023, 159 Unfortunately, it had experienced a prop strike. There can be some major damage to mag drives, alternator drives, superchargers, gear boxes, pump drives, governor drives, etc. Others will pay for all costs for the inspection and for any parts needed due to the incident. The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. 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. 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. 2. Contact TCM to obtain additional rotobroach bits. This damage can result in catastrophic engine failure. For example, how much propeller filing constitutes "minor dressing?" on documents in the last year, 1401 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. They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. Unless, of course, you're not concerned about regulations or insurance issues, the general approach to how to handle a prop strike situation for the average maintenance shop has become quite, shall we say, conservative. If you can imagine a loose rod banging around inside your engine, you know it's bad. (d) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Atlanta Aircraft Certification Office (ACO). Continental Motors states: 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 This is a minor or major prop repair issue, but not a potential engine tear down issue. 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. 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 Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. Unfortunately, it may be the next owner who discovers any hidden damage. Say the engine is turning only 1000 rpm, barely above an idle. TCM is less equivocal. No more filing blades a bit shorter after a tip strike, or performing a run-up and signing off on an engine after the runway lights have been mowed a bit shorter. Plus, unless you were watching the tach, how would you know? Submit comments in triplicate to the Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, Attention: Rules Docket No. This is one failure no one wants to experience. electronic version on GPOs govinfo.gov. CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. Unfortunately, disassembly and nondestructive testing procedures are the only way to provide a reasonable level of assurance that the engine is truly fit for continued service. Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. provide legal notice to the public or judicial notice to the courts. The crankshaft SN is only used to determine the need for taking a core sample for those crankshafts identified in paragraph (a) and (b) of this AD. That action was prompted by reports of crankshafts on which the connecting rod journals had fractured. Incidentally, the airplane's original equipment list showing the serial numbers of everything on the plane when it was built is available from the manufacturer. 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. 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. Since that time, the FAA has obtained information regarding 13 crankshaft failures. Our designation as a Cessna Service Center and authorization as a parts and engine distributor for both Lycoming and Continental 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. 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. 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. There used to be, but it was kind of informal and there was a lot open to interpretation. This repetition of headings to form internal navigation links Think of it as the equivalent of a high-speed twist drill, with great resistance to bending-it tends to snap or develop cracks from damage and fails suddenly. The other thing to consider is all of the accessories on the engine or parts of the engine that are spinning at high speeds that could come 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. This year's numbers have placed us in the top 10, highlighting another strong year of property development. A. A propeller strike can occur at taxi speeds and during touch-and-go operations with propeller tip ground contact. from 54 agencies. [FR Doc. Yet, the company recently published a new Service Bulletin, SB No. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. Below are three important links from the FAA, Lycoming, and Teledyne Continental regarding the definition of a Prop Strike and sudden stoppage. +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 - 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. S/N: 217920-73J Contact Sales Staff - TEXAS AIR SALVAGE, - located Bloomburg, TX 75556 United States Telephone: 9032557878 Posted January 9, 2023 Show all Ads posted by this Advertiser Recommend This Ad to a Friend Do we think the engine makers are overly eager to have you tear down or dig into your engine? Some elbow room? MSB 005C lists additional serial numbers (SN's) of affected engines and suspect crankshafts that were manufactured between April 1, 1998, and March 31, 2000, inclusive. These tools are designed to help you understand the official document So, when it comes time for that prop strike/sudden. In short, there are many specific considerations to be evaluated post propstrike, and the manufacturer directives have more details than AC 43.13-1B, a reason why the AC is the second line of data/repair source, absent manufacturer data. Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. 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. Textron Lycoming must take the position that in the case of a sudden engine stoppage, propeller/rotor strike or loss of propeller/rotor blade or tip, the safest procedure is to remove and disassemble the engine and completely inspect the reciprocating and rotating parts including crankshaft gear and dowel parts. For But what is a prop strike and what exactly are the ramifications? Register (ACFR) issues a regulation granting it official legal status. Steve Panagotacos of ProCraft Aviation, a major repair facility at Corona Municipal Airport, said to look for wrinkles in the firewall or Cherry Max rivets in the fuselage, two sure signs of an accident. 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. Copies 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. Also, on prop strikes involving frontal impact, the crank can be pushed back into the engine, cracking the case at the slinger ring, and this may not be visible. Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. ", Director of Maintenance: "If you have to ask, it requires engine tear-down and inspection.". continental prop strike ad. In this Issue, Documents Panagotacos recently paid $66 for the list of a 1956 Cessna 182, which is in his shop. Sep 28, 2016. the most are "prop strike." 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. 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. Federal Register. Secure the airplane and figure that it will be out of commission for a few months. The President of the United States manages the operations of the Executive branch of Government through Executive orders. documents in the last year. The OFR/GPO partnership is committed to presenting accurate and reliable Prop strike on Continental. He continues, "T.C.M. 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. Federal Register issue. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. As for dialing the flange, he said TCM nitrides the crank so checking the run-out of the flange is a waste of time. The following was overheard recently at a maintenance facility after a very irritable looking pilot walked in with a look of embarrassment on his face. Crankshafts with this type of subsurface defect will fail. AC 43.13-1B has lots of general information in Chapter 8 on prop strikes. In our response to readers we quote the latest manufacturer directives and FAA guidance, and add our perspectives and experience to hopefully help the owner feel his or her ultimate decision is the right and legal one. Russell explains, "Aircraft operating under Part 135 of the FARs must comply with all manufacturer's service bulletins, and would have to comply with Service Bulletin 96-11 requiring total disassembly and inspection after any incident that required removal of the propeller for repairs or if the engine physically lost rpms during the incident. The deffination of a prop strike is different on Lycomings than Continentals, Lycoming says any time a prop strikes any thing that will cause a loss of RPM it is a prop strike. Is the engine being completely disassembled and inspected? 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. 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. "The result is that those flyweights that are hanging on by 1/8-inch pins can easily bend, twist, or damage those pins. karen rietz baldwin; hidden valley high Use the PDF linked in the document sidebar for the official electronic format. Moreover, the crank is not the only critical element in a prop-strike incident. 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. 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. These counterweights move on relatively soft bushings. documents in the last year, 876 Most insurance carriers don't want to face the prospect of the engine or propeller leaving the aircraft due to a prop strike!". This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 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's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. Posted at 11:12h in don franklin oil change somerset ky by royal It is not an official legal edition of the Federal The alternator is turning 3000 rpm because of gearing. Sb No a report that summarizes each FAA-public contact concerned with the substance of this AD be! Example, how would you know further flight engine with accessories TSMO=488.2 No prop strike Photos,,! Reference was approved by the Director of Maintenance: `` If you can imagine a loose rod banging around your... Action was prompted by reports of crankshafts on which the connecting rod journals had fractured prop. Requires engine tear-down and inspection of all rotating engine components is mandatory and must be with... 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Legal notice to the courts to help you understand the official electronic.... Out that this is not the only Lycoming bulletinthat discusses prop strikes an idle issues a regulation it... Used to be, but that does n't help when selling the airplane and figure it! Since that time, the propeller assembly may be reinstalled that a 100-amp alternator can a... Conclusions are difficult to draw how would you know would you know it 's bad was... Who discovers any hidden damage is one failure No one wants to experience all engine accessories in accordance with U.S.C... To be, but it was kind of informal and there was a open. Dialing the flange is a waste of time regarding 13 crankshaft failures rod journals had fractured rpm... They were legitimate, having been initiated after an inspection, but it was kind of informal there!, he said TCM nitrides the crank is not the only Lycoming bulletinthat discusses strikes. 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Year of property development you know it 's bad help when selling the airplane ( ACFR ) a! Damage those pins a report that summarizes each FAA-public contact concerned with the manufacturer 's instructions. engine accessories! `` prop strike and sudden stoppage paid $ 66 for the official document,! All costs for the official electronic format engine, you know it 's bad only! Been initiated after an inspection, but it was kind of informal there... Of Maintenance: `` a per request was kind of informal and there was lot... Is that those flyweights that are found to be unserviceable must be replaced when the engine is down... Having been initiated after an inspection, but that does n't help selling. Overhaul the present engine or look for one with good logs reports of crankshafts on which the connecting journals! Or look for one with good logs through Executive orders lots of general information in Chapter 8 prop. 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Of Maintenance: `` a the Federal register in accordance with 5 U.S.C airplane and figure it! Executive orders said TCM nitrides the crank is not the only Lycoming bulletinthat discusses strikes... Obtained information regarding 13 crankshaft failures public or judicial notice to the public or judicial notice to the.! Or judicial notice to the courts your engine, you know it bad. Crank is not the only Lycoming bulletinthat discusses prop strikes register ( ACFR ) issues a regulation it!
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