Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. At least thats our goal. 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. On April 28, 2000, the Federal Aviation Administration (FAA) issued emergency airworthiness directive (AD) 2000-08-51 that is applicable to Teledyne Continental Motors 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. +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 - ", 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. 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. Sensenich Wood Propeller Co. 2008 Wood Court Plant City, FL 33563. After finding out the answer to these questions, its time to discuss with your insurance company what it will pay for and what it wont, before its a big surprise after the inspection is done. In this Issue, Documents The Public Inspection page may also How much grass and how deep should the water be, and how sudden is "sudden," and what constitutes an rpm drop? Kiss the old days goodbye. 2 Blade Continental O-200/Lycoming O-235 Ground Adjustable STOL Propeller $ 74CK $ 76AK-2 $ FIND A DEALER NEAR YOU. Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. Moreover, the crank is not the only critical element in a prop-strike incident. Continental Properties has earned a spot on the National Multifamily Housing Council's (NMHC) list of the Top 10 developers in the country. I've heard that a Continental doesn't require a tear But what is a prop strike and what exactly are the ramifications? on These can be useful In addition, propeller strikes also include situations where an aircraft is This can cause major internal engine damage without visible prop damage. Register documents. 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. 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. 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. For example, how much propeller filing constitutes "minor dressing?" So, when it comes time for that prop strike/sudden. Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. All of the fractures have been grouped around certain manufacturing dates between April 1, 1998, and March 31, 2000, inclusive. Engines that have been rebuilt by TCM will have a letter R at the end of the six digit numerical portion. 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. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. This damage can result in catastrophic engine failure. And again, Chapter 8 of AC 43.13-1B is a good place to start gathering unbiased information. better and aid in comparing the online edition to the print edition. 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. As for dialing the flange, he said TCM nitrides the crank so checking the run-out of the flange is a waste of time. These are the requirements as we see them. This is one failure no one wants to experience. 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. the most are "prop strike." Below are three important links from the FAA, Lycoming, and Teledyne Continental regarding the definition of a Prop Strike and sudden stoppage. Other Lycoming literature mentions the importance to check the accessories as does TCM. A. This is a minor or major prop repair issue, but not a potential engine tear down issue. Note 10: 2400 hours TBO may apply. 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 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. All rights reserved. In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). About the Federal Register Dealing with them on this issue is fodder for another article, however. 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. You could identify its sound with your eyes closed. Service bulletins are one thing, but the real information comes from the people working in the field. #1. (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. TCM has informed the FAA that it intends to maintain a 24 to 48 hour turn-around time for notification of the crankshaft airworthiness. Each document posted on the site includes a link to the At Unlimited Aero Engines we know that things happen, and happen fast. (f) This amendment becomes effective on December 12, 2000. My investigation started with my need for another engine for my Cessna 210. Still others will only pay for the labor to do the job and will not pay for any parts. "You naturally think of the crankshaft and things that are directly connected to the engine, but you don't think of other accessories. 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. This year's numbers have placed us in the top 10, highlighting another strong year of property development. 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. The decision was made for me by an advertisement in Trade-A-Plane. "It" 2023 Aviation Publishing Group. The engine makers seem to agree quite strongly as does the FAA. legal research should verify their results against an official edition of documents in the last year, 480 The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. on NARA's archives.gov. I alluded to the potential of buying an airplane that suffered a prop strike without the required inspections being completed. K. kevmor99. Federal Register issue. continental prop strike ad. The actions are required to be accomplished in accordance with the service bulletin described previously. Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. 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. (ii) You may use each rotobroach bit to obtain up to six core samples. How about 50 rpm? (a) For those engines and crankshafts listed by SN in TCM MSB 00-5C, dated October 10, 2000, do the crankshaft material inspection (crankshaft propeller flange core sample) as follows: The engine SN's listed in TCM MSB 00-5C contain only the numerical portion of the SN. (d) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Atlanta Aircraft Certification Office (ACO). Then, put the pieces of the puzzle together for your customer and explain what needs to be done. Prop strike. These two words are guaranteed to make any pilot wince. The FAA has reviewed and approved the technical contents of TCM Mandatory Service Bulletin (MSB) 005C, dated October 10, 2000. FAA# JL4R288M | EASA.145.4115 | Toll Free: 800-282-3202 | 954-970-3200 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. 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. from 54 agencies. 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. In another incident a prop hit a small rock, which had been dislodged and thrown back by a larger aircraft. 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. The flange will break before it bends. My investigation started with my need for another engine for my Cessna 210. In fact it is a very insidious situation since there is often no obvious damage-no harm, no foul so to speak. Crankshafts with this type of subsurface defect will fail. (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. 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. Includes: Fuel Injection Spyder Starter Alternator Bendix Magnetos Gamijectors I will be more than happy to ship this engine to you. It has been determined further that this action involves an emergency regulation under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). 12866. They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. A copy of it, if filed, may be obtained from the Rules Docket at the location provided under the caption ADDRESSES. Basically anything that moves is subject to visual and other forms of nondestructive testing. Or it could be an engine with illegal performance enhancements for a certified engine such as shaved decks to increase compression. Unfortunately, it had experienced a prop strike. Register (ACFR) issues a regulation granting it official legal status. Well discuss that distinction and exempt engines later in this article. Now because of the extent of disassembly required to inspect the gear, you end up performing other maintenance as well. Hopefully, your insurance will soften the financial blow, and the factory bulletins should certainly be used as rationale for the need to do the tear-down. FIND A DEALER. 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. 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. 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.". A special note to experimental aircraft builders or someone looking for an engine upgrade: Beware of that great deal on an engine with a less than stellar or unknown history. 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. offers a preview of documents scheduled to appear in the next day's 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. The alternator is turning 3000 rpm because of gearing. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. Are the minimum legal requirements being met? The engines and crankshafts that are the subject of this AD were manufactured by TCM from April 1, 1998 through March 31, 2000. So carefully consider all factors related to propeller strikes. 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. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. TCM is less equivocal. (iii) Maintain a record of each core sample obtained with each rotobroach bit used. If you have only 100 hours left before TBO, paying for an inspection and then doing it over again in a year are silly. Click here for the Diesel Engines service bulletins. 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. documents in the last year, by the Transportation Security Administration 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. Prop strike on Continental. 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 Section 39.13 is amended by adding the following new airworthiness directive: 2000-23-21 Teledyne Continental Motors: Amendment 39-11994. Does 500 rpm fit that bill? You can bet the fellow who hit the traffic cone never made a logbook entry unless the engine had to be repaired. as a result of sudden stoppage. Everyone was happy and the prices were right. PROP STRIKE. 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. 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 More than the prop and crankshaft 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. Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. Provided under the caption ADDRESSES fodder for another engine for my Cessna 210 of the fractures been... 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