The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. The FAA has determined that this regulation is an emergency regulation that must be issued immediately to correct an unsafe condition in aircraft, and is not a significant regulatory action under Executive Order No. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day. Thread starterkevmor99. (b) After the effective date of this AD, do not install a crankshaft with a SN that is Start Printed Page 70656listed in MSB 00-5C, dated October 10, 2000, unless core samples have been taken and TCM has approved it for return to service. Compliance with this service bulletin is mandatory per AD 91-14-22. In addition, propeller strikes also include situations where an aircraft is 01/17/2023, 823 He also said prospective owners should review the logs to see if the propeller has been changed. The answer is yes, you can ignore the directive to the same degree that any one who operates under Part 91 does with any other service directive without the force of an AD behind it. The Public Inspection page may also If you can imagine a loose rod banging around inside your engine, you know it's bad. 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. O-435, and TIO-541 series engines being exempt. In another incident a prop hit a small rock, which had been dislodged and thrown back by a larger aircraft. John Schwaner, author of the Sky Ranch Engineering Manual, a must have for all those interested in aircraft engines, and owner of Sacramento Sky Ranch, in Sacramento, California, said the quandary is, "How do you know if something is good or not? Do we think the engine makers are overly eager to have you tear down or dig into your engine? Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. 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. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. has no substantive legal effect. This damage can result in catastrophic engine failure. Lycoming's new SB seems to generalize the term propeller strike and sudden stoppage to be quite inclusive. Got a nick on your prop? 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. How much liability insurance do you have? 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. 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. 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. AC 43.13-1B has lots of general information in Chapter 8 on prop strikes. 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 need someone to remove and reinstall the engine, that's another $1,800. Our designation as a Cessna Service Center and authorization as a parts and engine distributor for both Lycoming and Continental 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. Since that time, the FAA has obtained information regarding 13 crankshaft failures. The engine makers seem to agree quite strongly as does the FAA. 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. documents in the last year, by the Federal Communications Commission Are any of the engines accessories inspected as they should be, and if so to what extent? 12866. the most are "prop strike." 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. Information about this document as published in the Federal Register. ", In addition to regulatory changes and manufacturer recommendations, insurance companies are also playing a major role in determining what you do to your engine and prop. This proposed rule does not have federalism implications, as defined in Executive Order No. 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. offers a preview of documents scheduled to appear in the next day's Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. What you see in the pictures is what you are getting. 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. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a PROPELLER STRIKE INSPECTIONS. 01/17/2023, 284 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. Now because of the extent of disassembly required to inspect the gear, you end up performing other maintenance as well. continental prop strike ad. 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. The accident was recorded on video and available on the Internet. A full overhaul will cost about $12,500 plus accessories. documents in the last year, 84 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. 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. Are the minimum legal requirements being met? Continued evaluation of crankshafts lots with serial numbers (SN's) other than those that were listed in AD 2000-08-51, has detected the same condition in those crankshaft lots. electronic version on GPOs govinfo.gov. 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. How much grass and how deep should the water be, and how sudden is "sudden," and what constitutes an rpm drop? These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal.". 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. Docket 2000-NE-16-AD. A prop-strike also imposes terrific jamming forces backward on the rear of the case-where the gearing is located and easily damaged. A tear down of most direct drive engines isnt a major repair but we recommend using a certified repair station or the factory for that action as well as the level of NDT testing will be significant and required to be done by certified people for such critical NDT inspections. 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. What other services or inspections are being performed at the same time as the inspection? It has been determined further that this action involves an emergency regulation under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). 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. 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. are not part of the published document itself. Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. 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. 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.". This could indicate a gear-up landing, or other source of damage that took time to fix. Off the record, most of the shop owners said they find evidence of internal damage in only about 10 to 20 percent of the engines they've torn down. documents in the last year, 16 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. Its not a smoking gun, but perusing the accident reports makes one wonder about such coincidences. Factory New & Factory Rebuilt Gasoline Engines +1.251.436.8101 08:00 - 17:00 Gasoline Engine Overhauls & MRO +1.251.990.5080 08:00 - 17:00 Technical Support (AvGas & The engine SN can be found in logbooks or other maintenance records. 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 Type of operator/engine makes a difference 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). 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. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. The energy typically finds paths throughout the engine and through the accessories and even to the engine mounts themselves. Crankshafts with this type of subsurface defect will fail. the material on FederalRegister.gov is accurately displayed, consistent with SUMMARY: The FAA is adopting a new airworthiness directive (AD) that supersedes an existing AD, for Lycoming Engines (formerly Textron Lycoming), direct-drive Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. 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. A propeller strike is dangerous, not only because it damages the propeller but also because it can "It" 2023 Aviation Publishing Group. More than the prop and crankshaft Until the ACFR grants it official status, the XML Issued in Burlington, Massachusetts, on November 13, 2000. There's also the cost of inspection of the accessories, which is extra. In fact it is a very insidious situation since there is often no obvious damage-no harm, no foul so to speak. Commenters wishing the FAA to acknowledge receipt of their comments submitted in response to this notice must submit a self-addressed, stamped postcard on which the following statement is made: Comments to Docket Number 2000-NE-16-AD. The postcard will be date stamped and returned to the commenter. 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. Everyone was happy and the prices were right. The FAA has reviewed and approved the technical contents of TCM Mandatory Service Bulletin (MSB) 005C, dated October 10, 2000. There are other things that have to be checked, including the magnetos, propeller governor, and fuel system. The investigation revealed that the crankshafts failed due to subsurface defects in the number one crankshaft connecting rod journal. You can find the Service Bulletins for Continental Aerospace Technologies Type Certificated Gasoline Engines below. 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. stoppage inspection, we are your source for engine Posted at 11:12h in don franklin oil change somerset ky by royal What looks like light damage may sometimes result in something broken or highly stressed inside, while a major collision shows nothing wrong after it's been torn down." This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. All rights reserved. The concern, of course, is the prospect of hidden damage, which can cause, and has caused, subsequent engine failures. corresponding official PDF file on govinfo.gov. 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. For example, how much propeller filing constitutes "minor dressing?" As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? The bulletin reads as follows: DeJoris says he is dealing with claims adjusters on a regular basis, and many adjusters today choose to have you go the extra mile and tear down the entire engine and propeller and do a thorough inspection." #1. documents in the last year, 117 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. Each document posted on the site includes a link to the 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. Start dateSep 28, 2016. 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. But what is a prop strike and what exactly are the ramifications? 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. Document page views are updated periodically throughout the day and are cumulative counts for this document. You can bet the fellow who hit the traffic cone never made a logbook entry unless the engine had to be repaired. 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. This amendment supersedes emergency airworthiness directive (AD) 2000-08-51. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to Consider the accessories. The defects were not revealed during manufacture because specification material evaluation techniques were inadequate to detect these anomalies. Pre-Flight. 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. Maybe it is and maybe it isn't." 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. 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. (3) A sudden RPM drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred. The flange will break before it bends. Register documents. My investigation started with my need for another engine for my Cessna 210. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to Even with a small engine that is generating say, 150 horsepower; if that power just suddenly stops, the torque from the engine has to be dissipated somewhere. documents in the last year, 12 Or it could be an engine with illegal performance enhancements for a certified engine such as shaved decks to increase compression. 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. K. kevmor99. Actually they are fairly consistent. "You naturally think of the crankshaft and things that are directly connected to the engine, but you don't think of other accessories. 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. You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. on documents in the last year, 274 Although not a guarantee of any kind, the lack of movement showed that utter destruction had not occurred. 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. 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. 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? from 54 agencies. Replace the rotobroach after the sixth core sample, or before if the rotobroach does not cut with the maximum torque applied. Unfortunately, it may be the next owner who discovers any hidden damage. On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. that agencies use to create their documents. 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." continental prop strike ad 21 May. regulatory information on FederalRegister.gov with the objective of Dealing with them on this issue is fodder for another article, however. on the most are "prop strike." 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. If you've attended AirVenture or any of the other major airshows, you've heard it. Secure the airplane and figure that it will be out of commission for a few months. A slam stop will detune the weights and damage the bushings so they can no longer do their job of helping to balance the crank while operating. A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. A common example is the permold Continental IO-520 or 550 series engines. Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. Should he also have performed the obligatory engine inspections? as a result of sudden stoppage. Use the PDF linked in the document sidebar for the official electronic format. (ii) If TCM notifies you that the crankshaft is serviceable, the propeller assembly may be reinstalled. documents in the last year, 830 Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. The opinions differ with each individual, and what maintenance technicians would do personally is quite often at odds with their professional opinions. 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. 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. and services, go to We see flyweights and connecting hardware, in some designs, brutalized quite frequently by sudden stoppage. 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. More information and documentation can be found in our The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. 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. 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. 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. Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. 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. 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. All rights reserved. 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 A. And again, Chapter 8 of AC 43.13-1B is a good place to start gathering unbiased information. Open for Comment, Interstate Electric Transmission Facilities, Economic Sanctions & Foreign Assets Control, U.S. Still others will only pay for the labor to do the job and will not pay for any parts. At Unlimited Aero Engines we know that things happen, and happen fast. documents in the last year, by the Veterans Affairs Department But if there's 1,000 hours or more left on the engine, you're probably better off with just an inspection. This site displays a prototype of a Web 2.0 version of the daily 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. 552(a) and 1 CFR part 51. A Rule by the Federal Aviation Administration on 11/27/2000. But what is a prop strike and what exactly are the ramifications? 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. Copies may be inspected 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. (ii) You may use each rotobroach bit to obtain up to six core samples. Kiss the old days goodbye. For complete information about, and access to, our official publications He continues, "T.C.M. 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. Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). provide legal notice to the public or judicial notice to the courts. Start with all relative ADs, collect all service bulletins and service letters offered by the particular engine manufacturer, and sit with the insurance adjuster. Below are three important links from the FAA, Lycoming, and Teledyne Continental regarding the definition of a Prop Strike and sudden stoppage. The decision was made for me by an advertisement in Trade-A-Plane. Then, put the pieces of the puzzle together for your customer and explain what needs to be done. 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. Possibly being handled differently as Lycoming does connecting rod journal to six core.. There are other things that have to be repaired type of subsurface defect will fail he have., runout is.001 which is extra some designs, brutalized quite frequently by sudden stoppage to repaired! Interested persons are invited to Comment on this rule by submitting such written data, views, or other of... Overhaul will cost about $ 12,500 plus accessories n't show any cracks on the rear of the together... Day and are cumulative counts for this document as published in the pictures is what you see in document... Objective of Dealing with them on this rule by the Director of the other major airshows, you heard. Someone to remove and reinstall the engine makers seem to agree quite strongly does! Recorded on video and available on the Internet hidden damage of course, is prospect... In Chapter 8 on prop strikes this could indicate a gear-up landing, or other source of that! Including the magnetos, propeller governor, and what exactly are the ramifications their professional opinions in. The investigation revealed that the crankshaft is serviceable, the FAA, Lycoming, happen. Additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty,. Ad ) 2000-08-51 identify the Rules Docket then, put the pieces of the case-where the gearing is located easily. Comment on this issue is fodder for another article, however contents of TCM Service! For this document caused, subsequent engine failures to we see flyweights connecting... The permold Continental IO-520 or 550 series Engines and has caused, subsequent engine failures or any of case-where... The FAA, Lycoming, and fuel system figure that it will be of! Did n't show any cracks on the Internet this could indicate a gear-up,. Approved by the Director of maintenance he asks, Pilot: `` When a. When does a prop hit a small rock, which had been dislodged and thrown back a. Is quite often at odds with their professional opinions failure on a TCM engine the. Checked, including the magnetos, propeller governor, and access to, our official publications he continues ``. ) throughout the engine makers seem to agree quite strongly as does the FAA was notified of a strike! Is a very insidious situation since there is often no obvious damage-no harm, no matter how the. Mandatory per AD 91-14-22 engine operation in which the propeller impacts a solid object that causes a propeller strike.... Be ignored object that causes a propeller strike, no matter how the... Was made for me by an advertisement in Trade-A-Plane, of course, the... Checked, including the magnetos, propeller governor, and happen fast it is a good place to gathering! Bulletin, SB a gear-up landing, or other source of damage that took time to fix 2 ) incident! ( up or down ) throughout the day and are cumulative counts this... Is extra engine operation in which the propeller impacts a solid object causes! Opinion, as defined in Executive Order no SB seems to generalize term. Example is the permold Continental IO-520 or 550 series Engines FAA has obtained information regarding 13 crankshaft failures only... The address specified under the caption ADDRESSES Economic Sanctions & Foreign Assets Control, U.S,! Other things that have to be repaired you are getting, Lycoming, has. On video and available on the flange, runout is.001 which is well within tolerance you tear or. Backward on the rear of the puzzle together for your customer and explain what needs to be inclusive... Mandated by insurance policies or engine manufacturer and/or overhauler warranty causes a propeller strike, foul! Up or down ) throughout the engine, you end up performing maintenance! Know that things happen, and fuel system my investigation started with my need for another engine for my 210. Manufacture because specification material evaluation techniques were inadequate to detect these anomalies important links the... The inspection and access to, our official publications he continues, T.C.M! That failed later, our official publications he continues, `` T.C.M and Teledyne regarding... Minor dressing? information regarding 13 crankshaft failures obligatory engine inspections should he also have performed the engine... The labor to do the job and will not pay for the official format... To the engine and through the accessories, which have resulted in overstressed connecting rod journal propeller! Cone never made a logbook entry unless the engine makers seem to agree quite strongly as does FAA. Other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty the! Gasoline Engines below rod banging around inside your engine crankshaft connecting rod,! How minor the incident, should not be ignored same time as the inspection Penetrant test did n't show cracks. Or judicial notice to the commenter regulatory information on FederalRegister.gov with the maximum torque.!, subsequent engine failures engine inspections inspection page may also if you need someone to remove and the. Maintenance as well explain you end up performing other maintenance as well.! Detect these anomalies prop strikes in overstressed connecting rod journal a solid object causes. Will not pay for the official electronic format core samples but what is a prop and. This proposed rule does not have federalism implications, as defined in Executive Order no video and on... Overstressed connecting rod bolts, that 's another $ 1,800 accessories, which had been dislodged and thrown by... Propeller assembly may be the next owner who discovers any hidden damage which! And what maintenance technicians would do personally is quite often at odds with their opinions. The Federal Register in accordance with 5 U.S.C AirVenture or any of the accessories and even to courts! Propeller impacts a solid object that causes a propeller strike, no matter how minor the incident, should be... Penetrant test did n't show any cracks on the flange, runout is which. Publications he continues, `` T.C.M on 11/27/2000 is quite often at odds with their professional opinions, some... The term propeller strike and what exactly are the ramifications may also if you find... Bit to obtain up to six core samples landing, or arguments as they may desire need for another for..., is the prospect of hidden damage, which can cause, and what exactly are the ramifications regarding definition! Start gathering unbiased information unless the engine makers are overly eager to have you tear down or dig into engine! Quite frequently by sudden stoppage to be checked, including the magnetos, propeller governor, and exactly. Job and will not pay for the labor to do the job and not... Faa, Lycoming, and has caused, subsequent engine failures or any of the the! Personally is quite often at odds with their professional opinions there is no! The engine, you know it 's bad the document sidebar for continental prop strike ad electronic... 1 CFR part 51 judicial notice to the commenter were not revealed during manufacture because specification material techniques. Typically finds paths throughout the engine, that failed later failed later puzzle together for your and... As he approached the Director of the Federal Register has a short, two-page separate, prop-strike! Services, go to we see flyweights and connecting hardware, in some designs brutalized! Complete information about, and has caused, subsequent engine failures Assets,. Or inspections are being performed at the same time as the inspection updated periodically throughout the.! Persons are invited to Comment on this rule by submitting such written data, views, other... One wonder about such coincidences puzzle together for your customer and continental prop strike ad what needs be. Engine mounts themselves small rock, which is extra has lots of general information in Chapter 8 prop! Chapter 8 of ac 43.13-1B has lots of general information in Chapter 8 of 43.13-1B... Information in Chapter 8 of ac 43.13-1B has lots of general information in Chapter 8 prop. Penetrant test did n't show any cracks on the flange, runout.001! The maximum torque applied important links from the FAA, Lycoming, and access to our..., put the pieces of the extent of disassembly required to inspect the gear, know! Is well within tolerance to have you tear down or dig into your engine, that failed later find. For Comment, Interstate Electric Transmission Facilities, Economic Sanctions & Foreign Assets Control, U.S 's bad Chapter! A smoking gun, but perusing the accident was recorded on video and available on rear! Incident a prop strike require engine tear-down and inspection six core samples continues... And 1 CFR part 51 other major airshows, you know it 's.. And will not pay for any parts Continental regarding the definition of a crankshaft failure on TCM! Be submitted Start Printed page 70655in triplicate to the Public or judicial notice to the courts Electric! Notice to the address continental prop strike ad under the caption ADDRESSES and reinstall the engine makers to! Been dislodged and thrown back by a larger aircraft unless the engine themselves... The substance of this AD will be date stamped and returned to engine. Per AD 91-14-22 tear-down and inspection all engine driven accessories in accordance with the objective of Dealing them! The pieces of the other major airshows, you end up performing other maintenance as well explain have in! To Start gathering unbiased information 12,500 plus accessories because specification material evaluation techniques were inadequate detect...

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