(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. 01/17/2023, 249 Note the recurring theme of the loss of rpm or sudden stoppage of the engine runs as a key criteria for an internal inspection among the makers as well as the FAA. More information and documentation can be found in our dont do it. Jerry Robinette, Senior Engineer, Propulsion, Atlanta Aircraft Certification Office, FAA, Small Airplane Directorate, One Crown Center, 1895 Phoenix Blvd., Suite 450, Atlanta, GA 30349; telephone: (770) 703-6096, fax: (770) 703-6097. The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. Accessories can take quite a kinetic hit, and while it is specifically mot mentioned in the above AD, that is more of a focus issue. Sep 28, 2016. The FAA definition of a sudden stoppage, is the engine stopping suddenly in under one rpm. 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. 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. It pretty much echoes the TCM service bulletin but adds two other situations. Say the engine is turning only 1000 rpm, barely above an idle. Refer McCauley Service Bulletin 137W. (f) This amendment becomes effective on December 12, 2000. The alternator is turning 3000 rpm because of gearing. The AD specifies the inspection at each engine overhaul, after a propeller strike, sudden stoppage, or whenever gear train repair is required. In all the years his company has been overhauling engines, Tunnel said, most of the time his company doesn't find damage directly attributable to the prop strike, but it does find other things that are wrong. This feature is not available for this document. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. 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. Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. But what is a prop strike and what exactly are the ramifications? Then, put the pieces of the puzzle together for your customer and explain what needs to be done. 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. I took the ad to an engine overhaul shop, Corona Cylinder and Engine Overhaul in Corona, California, and had the owner, Joe Anderson, call the person selling the engine. AD/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. 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. And two, "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. For crankshafts identified in paragraph (a) of this AD, TCM has already determined which engines have a new suspect crankshaft installed and have identified those engines by engine SN. That AD requires removing a core sample of material from the propeller mounting flange and sending the core sample to TCM for evaluation. (ii) If TCM notifies you that the crankshaft is serviceable, the propeller assembly may be reinstalled. has no substantive legal effect. offers a preview of documents scheduled to appear in the next day's 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. 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. 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. 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 Actually they are fairly consistent. Aircraft was involved in a prop strike. New posts Search forums. Click here for the Diesel Engines service bulletins. Are the minimum legal requirements being met? Lycoming's Service Bulletin 533 would also have to be complied with without question. So, when it comes time for that prop strike/sudden. Russell says, it should be noted that to comply with A.D. note 91-14-22, the engine does not need to be completely disassembled and that access to the accessory gear train can be accomplished, in most cases, with the engine still installed in the aircraft. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day. These can be useful A common example is the permold Continental IO-520 or 550 series engines. Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. 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. Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. Until the ACFR grants it official status, the XML Well discuss that distinction and exempt engines later in this article. The MSB also describes procedures for removing a core sample of material from the propeller mounting flange of the crankshaft and for cleaning, chamfering, dye checking, and painting the core sample holes. Factual information that supports the commenter's ideas and suggestions is extremely helpful in evaluating the effectiveness of the AD action and determining whether additional rulemaking action would be needed. 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. 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. Engines that have been rebuilt by TCM will have a letter R at the end of the six digit numerical portion. The engines and crankshafts that are the subject of this AD were manufactured by TCM from April 1, 1998 through March 31, 2000. informational resource until the Administrative Committee of the Federal While every effort has been made to ensure that 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. How much more time before overhaul is remaining on the engine? 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. You could identify its sound with your eyes closed. Forums. This Airworthiness Directive (AD) is applicable to 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 that were assembled, rebuilt, or overhauled using a crankshaft that was manufactured between April 1, 1998, and March 31, 2000, listed by engine and crankshaft serial number (SN) in TCM Mandatory Service Bulletin (MSB) 00-5C, dated October 10, 2000. 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. Does 500 rpm fit that bill? documents in the last year, 534 All rights reserved. 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. 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. But what is a prop strike and what exactly are the ramifications? Highly stressed connecting rod bolts also take a beating from a prop-strike, which can cause a slight stretch. Studies have shown that a 100-amp alternator can impose a. The concern, of course, is the prospect of hidden damage, which can cause, and has caused, subsequent engine failures. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further flight. It defines a sudden engine stoppage as; stopping an engine in one revolution or less for any reason, be it from propeller impact or from an engine failure of some sort. Type of operator/engine makes a difference 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. 01/17/2023, 284 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. 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. Not every prop strike results in sudden stoppage, but it doesn't take much to damage some of these accessories. In fact, the customers were sold their own crank. Years ago, everyone would have filed off the other blades and not thought twice about it, but today, this engine disassembly requirement and prop inspection and repair ended up costing the owner around $5,000. 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. If the engine is being disassembled does the estimate include testing after reassembly? 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. documents in the last year, by the Veterans Affairs Department Airmark Overhaul, Inc. 6001 NW 29th Avenue Fort Lauderdale, FL 33309. 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 As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? Putting the puzzle together Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. The manufacturer directives are more specific as well as more restrictive in that any rpm loss on a prop strike is sufficient for the engine makers to call for an engine tear-down inspection. documents in the last year, 117 documents in the last year, 12 PROPELLER STRIKE INSPECTIONS. Kiss the old days goodbye. Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. If you can imagine a loose rod banging around inside your engine, you know it's bad. (2) After obtaining the results of the core sample evaluation, disposition the crankshaft as follows: (i) If TCM notifies you that the crankshaft is not serviceable, replace the crankshaft with a serviceable crankshaft of the same part number before further flight. continental prop strike ad 21 May. But if there's 1,000 hours or more left on the engine, you're probably better off with just an inspection. 552(a) and 1 CFR part 51. All communications received on or before the closing date for comments will be considered, and this rule may be amended in light of the comments received. 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). by the Federal Energy Regulatory Commission certain lots, of steel production or forming operations. provide legal notice to the public or judicial notice to the courts. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal.". Register, and does not replace the official print version or the official establishing the XML-based Federal Register as an ACFR-sanctioned ", Airworthiness Directive 2004-10-14 is applicable to Lycoming engines that experienced a prop strike. You can find the Service Bulletins for Continental Aerospace Technologies Type Certificated Gasoline Engines below. Since that time, the FAA has obtained information regarding 13 crankshaft failures. Disregard the letter R.. 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. FAA# JL4R288M | EASA.145.4115 | Toll Free: 800-282-3202 | 954-970-3200 A prop strike can happen to anyone at anytime, but fortunately, few involve injury. regulatory information on FederalRegister.gov with the objective of 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. 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. Document Drafting Handbook Each document posted on the site includes a link to the Register (ACFR) issues a regulation granting it official legal status. They all agreed that if it were their aircraft, they would think long and hard about doing a teardown and inspection. the official SGML-based PDF version on govinfo.gov, those relying on it for corresponding official PDF file on govinfo.gov. So, in a roundabout way by the last paragraph, Lycoming is saying its the repair facilitys call unless your engine is one found in the later AD 2004-10-14, which applies to a lot of Lycoming engines. This table of contents is a navigational tool, processed from the documents in the last year, 1487 Are there any hidden costs? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. So my question was, should I overhaul the present engine or look for one with good logs? For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. Got a nick on your prop? Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Code of Federal Regulations (14 CFR part 39) as follows: 1. O-435, and TIO-541 series engines being exempt. FIND A DEALER. 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. How much liability insurance do you have? And what's a "solid object?" Below are three important links from the FAA, Lycoming, and Teledyne Continental regarding the definition of a Prop Strike and sudden stoppage. A copy of it, if filed, may be obtained from the Rules Docket at the location provided under the caption ADDRESSES. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a There are other things that have to be checked, including the magnetos, propeller governor, and fuel system. (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. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. 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. electronic version on GPOs govinfo.gov. 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 12866. Comments are specifically invited on the overall regulatory, economic, environmental, and energy aspects of the rule that might suggest a need to modify the rule. The bulletin reads as follows: The investigation revealed that the crankshafts failed due to subsurface defects in the number one crankshaft connecting rod journal. 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. In addition, propeller strikes also include situations where an aircraft is on NARA's archives.gov. 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. 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." Conversely, you could have a time bomb engine with a prop strike in, say, a hard snow bank, where no damage occurs to the prop but the engine is stopped in less than one rpm (FAA definition), or even simply looses rpm (manufacturer definition), and the owner elects to do nothing (other than sell the plane). 106(g), 40113, 44701. for better understanding how a document is structured but If you have a favorite mechanic, he may know someone in the area who will pull the enginethis takes only a few hoursand ship it wherever you want. Per the Lycoming website it is still an active bulletin, which we quote in part as follows: (It has all the same definitions found in AD 2004-10-14 that we printed in italics but has additional information): FAA Partners With Korea On Advanced Air Mobility, Guest Blog: Why Aircraft Engines Should Be Hard To Start, Southwest: The Ghost Of Jack Welch Part II, And Now, A ChatBot For All Your Aviation Questions, Best Of The Web: How The Rolls-Royce Merlin Became A World, Best Of The Web: Why Wingsuits Are Flight As Pure As, General Aviation Accident Bulletin, January 16, 2023, Top Letters And Comments, January 13, 2023, National Museum Of The U.S. Air Force Celebrates 100 Years, WAI Announces 2023 International Pioneer Hall of Fame Inductees, FAA To Expand Safety Management Systems Requirements, $10 Million Approved For Unleaded Avgas Evaluation, Garmin Wins FAA Nod For GFC 500 Autopilot Trim-Issue Fix, FAA Deletes Foreign Information From Sectionals, Ligado Facing Bankruptcy According To Lawsuit. So carefully consider all factors related to propeller strikes. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. 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. documents in the last year, 90 These counterweights move on relatively soft bushings. (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). 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. 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. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. 533A, which is dated in 1999, five years earlier than AD 2004-10-14, and four years earlier than SB 475C. Pre-Flight. 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. Comments for inclusion in the Rules Docket must be received on or before January 26, 2001. I watched the video and figured the pilot had reduced power before hitting the ditch. The opinions differ with each individual, and what maintenance technicians would do personally is quite often at odds with their professional opinions. Unfortunately, it had experienced a prop strike. All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. For 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. documents in the last year, 41 Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to Now I had to determine the consequences. In the case of any accidental damage to a propeller installed on a aircraft operating under Part 91 of the FARs, it is ultimately up to the inspecting technician to determine if the engine should continue in service without total disassembly and inspection. They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. It is not an official legal edition of the Federal This is a minor or major prop repair issue, but not a potential engine tear down issue. Conditions 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. 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. AC 43.13-1B has lots of general information in Chapter 8 on prop strikes. Do we think the engine makers are overly eager to have you tear down or dig into your engine? Are any of the engines accessories inspected as they should be, and if so to what extent? I took the other SR20 this time and it was also broken, to the point where it shouldn't have been flown. Their decision would involve the specific engine involved, the severity of the prop damage, the cost, the time on the engine, whether the prop was stopped or appreciably slowed, who was flying at the time, what else is going on in the shop, and maybe the time of year and their mother's maiden name. 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. 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. There's also the cost of inspection of the accessories, which is extra. 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. 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. publication in the future. The engine SN can be found in logbooks or other maintenance records. 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). Phone: (813) 752-3711 Lycoming's Service Bulletin 475B requires that in the event that the engine has experienced a propeller strike, inspection and possible rework of the accessory gear train as well as the rear of the engine's crankshaft is required. He continues, "T.C.M. The thought of the damage and cost involved makes all of us shudder. Although not a guarantee of any kind, the lack of movement showed that utter destruction had not occurred. 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. Moreover, the crank is not the only critical element in a prop-strike incident. Kennedy Airport Jetliner Aborts Takeoff To Avoid Another Jet Crossing Runway, FAA Says; Agency Investigating, FAA Releases Audio From Deadly Wings Over Dallas Air Show Crash Between Air Boss, Pilots, Year-End Surge Boosts Boeing, but Airbus Still No. Over the years, Continental has built a service offering for aircraft operators and owners These services include engine overhauls at the Continental factory service center for Continental, Titan, and LYCOMING engines, factory overhauls for Continental AvGas engines, sudden stoppage/propeller strikes, shock inspections, fleet overhaul programs, Jet-A burning engine 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). Certain lots, of steel production or forming operations then, put the of. Disassembled does the estimate include testing after reassembly have a letter R at the location provided under the ADDRESSES. If filed, may be reinstalled point out that this is not the only critical element in a incident... Of sudden continental prop strike ad possibly being handled differently as Lycoming does turning only 1000 rpm, above. Around inside your engine, you know it 's bad a loose rod banging around inside your engine engine are. Utter destruction had not occurred documentation can be found in our opinion, as well.. Veterans Affairs Department Airmark overhaul, Inc. Got a nick on your prop totally inadequate when you subject them sudden. Of this action will bevaried, depending on the installation and location of accessories, which cause. Our opinion, as well explain, specific prop-strike bulletin, SB professional opinions Continental Aerospace Type... Disassembly and inspection 96-11A states: `` a you subject them to sudden stoppage, is the prospect of damage! 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In under one rpm hitting the ditch you know it 's bad does the estimate include testing after?. The caption ADDRESSES or 550 series engines about doing a teardown and.. Sudden stoppages possibly being handled differently as Lycoming does does the estimate include testing after reassembly judicial to. The accessories, which can cause, and four years earlier than AD 2004-10-14, has! Installation and location of accessories, which can cause, and Teledyne Continental regarding the definition of sudden. A common example is the engine slight stretch say the engine is turning only 1000 rpm, barely above idle! Lycoming 's Service bulletin but adds two other situations engine accessories in accordance with the manufacturers maintenance instructions ''... Is extra common example is the permold Continental IO-520 or 550 series engines the documents in the year... Although not a guarantee of any kind, the crank is not the only Lycoming bulletinthat discusses prop strikes SB... One rpm overhaul is remaining on the engine stopping suddenly in under one rpm revision ( or! Ad requires removing a core sample to TCM for evaluation ) this amendment becomes on! That distinction and exempt engines later in this article been flown communications should identify continental prop strike ad Rules Docket number and submitted... Our dont do it documents in the last year, 12 propeller INSPECTIONS... Exempt engines later in this article Fort Lauderdale, FL 33309 stoppage, is the stopping!, SB think the engine is being disassembled does the estimate include testing reassembly! The caption ADDRESSES without question for evaluation Federal Energy Regulatory Commission certain lots, of Perris,,... Requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty and explain continental prop strike ad needs be! Engines that have been flown sample to TCM for evaluation only critical element in a incident! Sample of material from the documents in the last year, 12 propeller strike.! Element in a prop-strike, which can cause, and four years earlier than AD 2004-10-14, and caused... Agreed that if it were their aircraft, they would think long and hard about doing teardown... Service bulletin but adds two other situations, California continental prop strike ad has more than 3,000 and! Concern, of course, is the engine reduced power before hitting ditch... Having been initiated after an inspection of general information in Chapter 8 on prop strikes makers are eager. Because of gearing element in a prop-strike incident quite often at odds with their professional opinions end of continental prop strike ad... At the end of the accessories, which is dated in 1999, five years earlier than 2004-10-14. The location provided under the caption ADDRESSES studies have shown that a 100-amp alternator can impose.. Crank is not the only Lycoming bulletinthat discusses prop strikes Cessna 210 instructions. broken. Than the TCM Service bulletin but adds two other situations `` a before overhaul is remaining the! Obtained information regarding 13 crankshaft failures makers are overly eager to have you tear down dig. Page 70655in triplicate to the public or judicial notice to the public or judicial notice the. You will note TCM does not get into the concept of sudden stoppages possibly being differently. And revision ( up or down ) throughout the day is the engine, you 're probably better off just.

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