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. A prop that hits so hard as to bend the crank flange is only one of several considerations. I alluded to the potential of buying an airplane that suffered a prop strike without the required inspections being completed. 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. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. what would martial law in russia mean phoebe arnstein wedding joey michelle knight son picture brown surname jamaica. The FAA has determined that all of the defects were due to unique material composition characteristics combined with process control variations that occurred during the material melt process. developer tools pages. +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 - Highly stressed connecting rod bolts also take a beating from a prop-strike, which can cause a slight stretch. This occurred during several discrete periods, i.e. 600-ft lb load on the crank gear on a sudden stop from 1000 engine rpm. 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 If you can imagine a loose rod banging around inside your engine, you know it's bad. 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. In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). 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." The simple physics of a prop strike, in our opinion, makes a compelling case for an internal engine inspection with visual and thorough NDT techniques. But what is a prop strike and what exactly are the ramifications? Some elbow room? 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). If the engine is being disassembled does the estimate include testing after reassembly? FAA# JL4R288M | EASA.145.4115 | Toll Free: 800-282-3202 | 954-970-3200 We see flyweights and connecting hardware, in some designs, brutalized quite frequently by sudden stoppage. 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. "You naturally think of the crankshaft and things that are directly connected to the engine, but you don't think of other accessories. The energy typically finds paths throughout the engine and through the accessories and even to the engine mounts themselves. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal.". 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. Document page views are updated periodically throughout the day and are cumulative counts for this document. 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. On numerous occasions, Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved Forums. Our designation as a Cessna Service Center and authorization as a parts and engine distributor for both Lycoming and Continental Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. documents in the last year, 90 The engine for sale was the model I needed, with about 1,000 hours since a factory overhaul. Textron Lycoming must take the position that in the case of a sudden 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. The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. 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. The $8,500 differential is not insignificant. 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. As mentioned earlier, Advisory Circular 43.13-1B, Chapter 8 defines a sudden engine stoppage as stopping an operating engine in one revolution or less for any reason, period, and includes prop-strike damage as a subset of the of sudden stoppage definition (at least the way we interpret the way it is written). SUMMARY: The FAA is adopting a new airworthiness directive (AD) that supersedes an existing AD, for Lycoming Engines (formerly Textron Lycoming), direct-drive 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. More information and documentation can be found in our Federal Register. 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. 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. Phone: (813) 752-3711 Dealing with them on this issue is fodder for another article, however. There are other things that have to be checked, including the magnetos, propeller governor, and fuel system. Another problem area is in engines with crank counterweights, a very common design. (f) This amendment becomes effective on December 12, 2000. PROPELLER STRIKE INSPECTIONS. 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. Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. on 12866. offers a preview of documents scheduled to appear in the next day's The AD specifies the inspection at each engine overhaul, after a propeller strike, sudden stoppage, or whenever gear train repair is required. 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. 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. to a sudden stop. You will also find additional info detailing prop damage repair, minor to major, irrespective of any of the prop strike consideration. This proposed rule does not have federalism implications, as defined in Executive Order No. (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. Unfortunately, it had experienced a prop strike. The accident was recorded on video and available on the Internet. K. kevmor99. [FR Doc. But if there's 1,000 hours or more left on the engine, you're probably better off with just an inspection. 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. Emergency AD 2000-08-51 was sent to all known U.S. owners and operators of Teledyne Continental Motors (TCM) IO-360, TSIO-360, LTSIO-360, O-470, IO-470, TSIO-470, IO-520, TSIO-520, LTSIO-520, IO-550, TSIO-550, and TSIOL-550 series reciprocating engines by individual letters. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. Inspect all engine accessories in accordance with the manufacturer's instructions.". Information about this document as published in the Federal Register. 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. documents in the last year, by the Transportation Security Administration 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. CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. He continues, "T.C.M. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to There can be some major damage to mag drives, alternator drives, superchargers, gear boxes, pump drives, governor drives, etc. the most are "prop strike." informational resource until the Administrative Committee of the Federal 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. 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. These counterweights move on relatively soft bushings. (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. 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. 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. They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. The alternator is turning 3000 rpm because of gearing. 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 The rationale for this hub retirement criteria revolves around the fact that forces great enough to bend blades beyond their respective repair limits represent loads that are in excess of those that the hubs were designed to withstand, while providing sufficient structural safety margins.". Sun Sep 23, 2018 8:02 pm. 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." Maybe it is and maybe it isn't." Use the PDF linked in the document sidebar for the official electronic format. Refer McCauley Service Bulletin 137W. This damage can result in catastrophic engine failure. As for dialing the flange, he said TCM nitrides the crank so checking the run-out of the flange is a waste of time. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. documents in the last year, 675 Does 500 rpm fit that bill? stoppage inspection, we are your source for engine documents in the last year, by the Veterans Affairs Department documents in the last year, 1401 ", DeJoris adds, "As a result, there is no real relationship today between the extent of damage of the prop and the type of inspection that has to be done to the engine. A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. The flange will break before it bends. 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. 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." The President of the United States manages the operations of the Executive branch of Government through Executive orders. Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. Now because of the extent of disassembly required to inspect the gear, you end up performing other maintenance as well. In light of the preceding information, would you be comfortable doing that? The President of the United States issues other types of documents, including but not limited to; memoranda, notices, determinations, letters, messages, and orders. Airmark Overhaul, Inc. 6001 NW 29th Avenue Fort Lauderdale, FL 33309. Issued in Burlington, Massachusetts, on November 13, 2000. 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. (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. Aircraft was involved in a prop strike. documents in the last year, 12 He also said prospective owners should review the logs to see if the propeller has been changed. Per the Lycoming website it is still an active bulletin, which we quote in part as follows: On numerous occasions Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved in the separation of the propeller/rotor blade from the hub, the loss of a propeller/rotor blade tip or sudden stoppage following accidental propeller/rotor damage (such as propeller/rotor strike). Prior to any ground operation of the engine assure that the propeller flange and the crankshaft flange area are free of any crack indications in addition to the engine component inspection. On Lycoming engines, which are not nitrided, the flange can be bent. I spoke with several shop owners and asked their opinion. Now that I had a definition, what would I have to do about such an event? You can find the Service Bulletins for Continental Aerospace Technologies Type Certificated Gasoline Engines below. 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. documents in the last year, 117 The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. Sure, some of these arguments are specious, but the point is, there's a lot of gray area, and this can cause many incidents to be ignored. Engine inspection requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and intertwine. Accordingly, the FAA has not consulted with state authorities prior to publication of this proposed rule. How much more time before overhaul is remaining on the engine? This article originally appeared in the December 2012 issue of Light Plane Maintenance. Continental Properties has earned a spot on the National Multifamily Housing Council's (NMHC) list of the Top 10 developers in the country. 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. Disregard the letter R.. Many insurance companies will not pay for any inspection requirements unless damage from the incident is found during that inspection. Thread starter kevmor99; Start date Sep 28, 2016; K. kevmor99 Prop strike on Continental. I bought the engine and started my quest to determine what I absolutely had to do to get the airplane airworthy. 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. on NARA's archives.gov. 01/17/2023, 202 2023 Endeavor Business Media, LLC. Compliance with the requirements of this AD is required within the next 10 hours time-in-service from the effective date of this AD, unless already done. According to John DeJoris, president of Aircraft Propeller Service Inc., in Wheeling, IL, "The FAA has embraced the policy that any type of propeller strike is a cause for teardown and engine manufacturers are quickly jumping on board. This is a minor or major prop repair issue, but not a potential engine tear down issue. 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. Open for Comment, Interstate Electric Transmission Facilities, Economic Sanctions & Foreign Assets Control, U.S. Nitride hardened cranks have a greater tendency to crack, since the nitride hardened materials resist bending. Until the ACFR grants it official status, the XML 2 Blade Continental O-200/Lycoming O-235 Ground Adjustable STOL Propeller $ 74CK $ 76AK-2 $ FIND A DEALER NEAR YOU. You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. 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. Prop strike. These two words are guaranteed to make any pilot wince. Federal Register issue. 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. regulatory information on FederalRegister.gov with the objective of Its not a smoking gun, but perusing the accident reports makes one wonder about such coincidences. 552(a) and 1 CFR part 51. Recent changes in the approach to propeller strikes dictated by Airworthiness Directives, engine manufacturer Service Letters, and insurance company policy have made anything less than a thorough teardown and NDT inspection unacceptable. 's Service Bulletin 96-11, in a nutshell, says that if a propeller must be removed from the aircraft to be repaired following a propeller blade impact of any sort or if the engine physically lost rpms from the incident, then the engine has experienced a propeller strike and it should be removed from service and completely disassembled and thoroughly inspected for damage from the incident." 01/17/2023, 249 There's a tremendous amount of energy stored in the rotating flyweight, and when all of a sudden you stop the prop and engine, that energy has to be dissipated somewhere.". Includes: Fuel Injection Spyder Starter Alternator Bendix Magnetos Gamijectors I will be more than happy to ship this engine to you. In short, all accessories become suspect to damage under either a prop strike or sudden stoppage incident. All crankshafts that are found to be unserviceable must be replaced with a serviceable crankshaft prior to further flight. On severe prop strikes, the mounts can be easily twisted and loaded in a way that it was not designed to withstand," he says. 49 U.S.C. Click here for the Diesel Engines service bulletins. (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). About the Federal Register Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. The OFR/GPO partnership is committed to presenting accurate and reliable documents in the last year, 973 The Public Inspection page 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. 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. 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. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to This table of contents is a navigational tool, processed from the According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. 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. Got a nick on your prop? 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. For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. are not part of the published document itself. The service information referenced in this AD may be obtained from Teledyne Continental Motors, PO Box 90, Mobile, AL 36601; telephone toll free 1-888-200-7565, or on the TCM internet site www.tcmlink.com. This information may be examined at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. Propeller strike inspections. So, when it comes time for that prop strike/sudden. Located in Burlington, North Carolina, we provide an array of aircraft maintenance services, including engine, cylinder, and propeller overhaul and repair. 01/17/2023, 159 documents in the last year, 830 continental prop strike ad. The oil pump on the Continental IO-360 is driven by a very small shaft, for instance, and can be easily sheared as a result of a strike," says DeJoris. Document Drafting Handbook It turned out to be a salvage shop and the owner confirmed that the logs for the engine were available, and the crank had been dialed, and found to be OK. Dialing checks the run-out, which is the amount of movement at the flange when the crank is rotated. Are any of the engines accessories inspected as they should be, and if so to what extent? 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. All rights reserved. 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). 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. 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. Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. 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. This may seem to contradict itself since sudden stoppage is mentioned earlier in the AD in the prop strike-definitions section, but thats the way it is written with an orientation to certain types of direct drive Lycoming engines, with only Lycoming O-145, O-320H, O-360E, LO-360E, LTO-360E,O-435, and TIO-541 series engines being exempt. That said, we did an article a few years ago where an owner of an old Bonanza bought an IO-520 engine from another Bonanza engine owner who upgraded to a factory IO-550. 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. A copy of it, if filed, may be obtained from the Rules Docket at the location provided under the caption ADDRESSES. Plus, unless you were watching the tach, how would you know? ", Case in point of the issuing agency. Be especially wary if this is some form of private cash sale that has to be done right away, unless you are planning to have it torn down and rebuilt by a shop with the right inspection equipment to inspect for crank and gear damage, and be prepared for costs potentially exceeding a factory reman engine i.e. The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. Recently, a transient aircraft hit a rubber traffic cone with the prop and kept going, taking off and disappearing into the western sky. (iv) Do not exceed the torque limits specified in TCM MSB 00-5C, dated October 10, 2000, when obtaining the core sample. Even tip damage is considered cause for teardown Lycoming's Service Bulletin 533 would also have to be complied with without question. TCM is less equivocal. Fish and Wildlife Service Headquarters, Fora Area Brasileira FAB Comando da Aeronutica (Brazilian Air Force), Establishing the President's Advisory Council on African Diaspora Engagement in the United States, https://www.federalregister.gov/d/00-29496, MODS: Government Publishing Office metadata. This document has been published in the Federal Register. 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. Effective December 12, 2000. 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. In addition, propeller strikes also include situations where an aircraft is These are the requirements as we see them. While every effort has been made to ensure that Putting the puzzle together If you've attended AirVenture or any of the other major airshows, you've heard it. Others will pay for all costs for the inspection and for any parts needed due to the incident. Register documents. More than the prop and crankshaft On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. This is not restricted to propeller strikes againstthe ground. 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. Unfortunately, it may be the next owner who discovers any hidden damage. 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. This AD, defines a propeller strike as follows: (i) For the purposes of this AD, a propeller strike is defined as follows: (1) Any incident, whether or not the engine is operating, that requires repair to the propeller other than minor blade dressing. What you see in the pictures is what you are getting. PROP STRIKE. documents in the last year, 84 It pretty much echoes the TCM service bulletin but adds two other situations. corresponding official PDF file on govinfo.gov. The authority citation for part 39 continues to read as follows: Authority: New posts Search forums. We like to think that those we deal with are honest, however, there's a chance of impropiety by a seller, so when buying an airplane, be careful. 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 Or it was known to have been used on a plane that crashed or was somehow damaged or is missing a complete set of engine logs or some parts. That engine may be a time bomb, and an illegal one if the data plate is still on the engine, as after some mods it no longer qualifies as a certified engine, and may not be economically able to be recertified, depending on what was done to it. Pre-Flight. This repetition of headings to form internal navigation links Compliance with this service bulletin is mandatory per AD 91-14-22. For example, how much propeller filing constitutes "minor dressing?" 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. on 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. Submit comments in triplicate to the Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, Attention: Rules Docket No. Since a situation exists that requires the immediate adoption of this regulation, it is found that notice and opportunity for prior public comment hereon are impracticable, and that good cause exists for making this amendment effective in less than 30 days. 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. Start with all relative ADs, collect all service bulletins and service letters offered by the particular engine manufacturer, and sit with the insurance adjuster. 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. documents in the last year, 480 ", Airworthiness Directive 2004-10-14 is applicable to Lycoming engines that experienced a prop strike. 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. Lycoming makes the point that an overstressed crankshaft gear dowel pin can ultimately shear, causing all power to be lost. Not every prop strike results in sudden stoppage, but it doesn't take much to damage some of these accessories. 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). Although not a guarantee of any kind, the lack of movement showed that utter destruction had not occurred. 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. 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. documents in the last year, 16 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. 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. There's also the cost of inspection of the accessories, which is extra. O-435, and TIO-541 series engines being exempt. Basically the fuel gauges in the center console are shorting out. I wouldn't skimp on safety, but if I could save a few dollars on cosmetics, I sure would. Either may require additional inspection but neither may negate the inspections required by the FARs. TCM is less equivocal. documents in the last year, by the Fish and Wildlife Service the Federal Register. Section 39.13 is amended by adding the following new airworthiness directive: 2000-23-21 Teledyne Continental Motors: Amendment 39-11994. My group also argued about the propeller hitting grass and water. Never allow an insurance adjuster to dictate the inspection requirements after an incident. The thought of the damage and cost involved makes all of us shudder. legal research should verify their results against an official edition of Re: O-360 propeller indexing (noticeable slight vibration) Lycoming O-360 A-1As (and every other O-360 Ive met) propellers should be indexed such that the propeller stops at the 10 and 4 o'clock position (viewed from the front facing aft) when the engine shuts down. 533 called "Recommendations Regarding Accidental Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip.". electronic version on GPOs govinfo.gov. 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. Incidentally, I opted to overhaul the engine instead of just doing an inspection. 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 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 this Service Bulletin or (2) any incident while the engine is operating in which the propeller makes contact with any object that results in a loss of engine RPM. And anyway, who needs NOTAMs? 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. It has been determined further that this action involves an emergency regulation under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). My investigation started with my need for another engine for my Cessna 210. If it is determined that this emergency regulation otherwise would be significant under DOT Regulatory Policies and Procedures, a final regulatory evaluation will be prepared and placed in the Rules Docket. on 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. The thought of the damage and cost involved makes all of us shudder. The engine SN can be found in logbooks or other maintenance records. Kiss the old days goodbye. At least thats our goal. Still others will only pay for the labor to do the job and will not pay for any parts. A propeller strike is dangerous, not only because it damages the propeller but also because it can After the extent of the inspection has been determined, it is important, as with any major repairs that are accomplished on your aircraft, to find out exactly what is included in the estimate to repair your engine following a prop strike. 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. Without even trying, the FAA did what hasn't been done since 9/11: It cleared the airspace of commercial traffic. Lycoming's new SB seems to generalize the term propeller strike and sudden stoppage to be quite inclusive. You could identify its sound with your eyes closed. documents in the last year, by the Federal Communications Commission So my question was, should I overhaul the present engine or look for one with good logs? SENSENICH WOOD PROPELLER COMPANY LOCATED IN PLANT CITY, FL. To start my investigation, I wanted the official definition of a prop strike. At Unlimited Aero Engines we know that things happen, and happen fast. 2023 Aircraft Owners and Pilots Association, Better Together: Industry Resources Help Improve Aviation Safety. Both Lycoming and Continental have very specific requirements for disassembly and inspection. 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.". Sep 28, 2016. They are often ignored in the prop-strike evaluation, yet they have prescribed inspection criteria even if involved in only a sudden stoppage. documents in the last year, 876 Docket 2000-NE-16-AD. 2. continental prop strike ad 21 May. 01/17/2023, 823 It is not an official legal edition of the Federal 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. DeJoris, who deals with propeller strike issues quite frequently says, "We recently had a customer with a prop strike who struck a steel stake that cut 1/4-inch of the tip off one blade of a three bladed prop. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. Any incident while the engine is operating in which the propeller makes contact with any object that results in a loss of engine RPM, such as propeller strikes against the ground or any object can cause engine and component damage even though the propeller may continue to rotate. 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. Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. 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. Each document posted on the site includes a link to the The FAA has reviewed and approved the technical contents of TCM Mandatory Service Bulletin (MSB) 005C, dated October 10, 2000. 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). Comments for inclusion in the Rules Docket must be received on or before January 26, 2001. After defining a prop strike, TCM's SB 96-11A states: "A. Propeller inspections are fairly clear cut damage on the blades is typically quite apparent, and the existence of damage beyond field repair limits dictates that the unit is disassembled and given a searching internal inspection, and in some cases, complete overhaul. 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. As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? You can bet the fellow who hit the traffic cone never made a logbook entry unless the engine had to be repaired. "It" 2023 Aviation Publishing Group. Do we think the engine makers are overly eager to have you tear down or dig into your engine? (ii) If TCM notifies you that the crankshaft is serviceable, the propeller assembly may be reinstalled. All rights reserved. headings within the legal text of Federal Register documents. documents in the last year, 28 document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. documents in the last year, 1487 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. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. I took the other SR20 this time and it was also broken, to the point where it shouldn't have been flown. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal. There used to be, but it was kind of informal and there was a lot open to interpretation. 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. In fact, the customers were sold their own crank. Basically anything that moves is subject to visual and other forms of nondestructive testing. So carefully consider all factors related to propeller strikes. Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. Should he also have performed the obligatory engine inspections? as a result of sudden stoppage. He adds, "This limits their liability exposure. (ii) You may use each rotobroach bit to obtain up to six core samples. They all agreed that if it were their aircraft, they would think long and hard about doing a teardown and inspection. that agencies use to create their documents. A propeller strike is: (1) any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades as set forth in Part I, B of this Service Bulletin or (2) any incident while the engine is operating in which the propeller makes contact with any object that results in a loss of engine RPM. 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. Teledyne Continental Motors has a slightly different approach, but not much different in practice. documents in the last year, 274 Then, put the pieces of the puzzle together for your customer and explain what needs to be done. This amendment requires removing a core sample of material from the propeller mounting flange of certain crankshafts, and sending the core sample to TCM for evaluation. 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. It is recommended that the technician views and understands Instructional Video for Compliance with Teledyne Continental Motors Mandatory Service Bulletin MSB 00-5C before performing these procedures.
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