Thread starterkevmor99. (iii) Maintain a record of each core sample obtained with each rotobroach bit used. to a sudden stop. The accident was recorded on video and available on the Internet. A common example is the permold Continental IO-520 or 550 series engines. It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents. The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. 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. 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. 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. documents in the last year, 41 This article originally appeared in the December 2012 issue of Light Plane Maintenance. 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. Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. 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. 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. Register documents. Sensenich Wood Propeller Co. 2008 Wood Court Plant City, FL 33563. This year's numbers have placed us in the top 10, highlighting another strong year of property development. He used a football analogy of a player who can be brutally tackled and get right up, then trip over a bucket and break his leg. Well, for one i dont think i want to take out any of the clubs planes ever again. In short, all accessories become suspect to damage under either a prop strike or sudden stoppage incident. 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. All rights reserved. Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. 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). are not part of the published document itself. 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. 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. 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. dont do it. Service bulletins are one thing, but the real information comes from the people working in the field. daily Federal Register on FederalRegister.gov will remain an unofficial Actually they are fairly consistent. Plus, unless you were watching the tach, how would you know? Prop strike on Continental. Another problem area is in engines with crank counterweights, a very common design. 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. Inspect all engine accessories in accordance with the manufacturer's instructions.". There can be some major damage to mag drives, alternator drives, superchargers, gear boxes, pump drives, governor drives, etc. 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. Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. This is not restricted to propeller strikes againstthe ground. The decision was made for me by an advertisement in Trade-A-Plane. 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). A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. When a prop strike incident occured, standard industry accesptance was to have the mechanic remove the propeller and dial indicator, "or check the crankshaft flange for being out of limits." 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 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. ", 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. documents in the last year, 274 This feature is not available for this document. (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. from 54 agencies. More information and documentation can be found in our SUMMARY: The FAA is adopting a new airworthiness directive (AD) that supersedes an existing AD, for Lycoming Engines (formerly Textron Lycoming), direct-drive It pretty much echoes the TCM service bulletin but adds two other situations. Secure the airplane and figure that it will be out of commission for a few months. Either may require additional inspection but neither may negate the inspections required by the FARs. that agencies use to create their documents. I wouldn't skimp on safety, but if I could save a few dollars on cosmetics, I sure would. In fact, the customers were sold their own crank. And anyway, who needs NOTAMs? This document has been published in the Federal Register. certain lots, of steel production or forming operations. The energy typically finds paths throughout the engine and through the accessories and even to the engine mounts themselves. 01/17/2023, 249 533 called "Recommendations Regarding Accidental Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip.". The $8,500 differential is not insignificant. Not every prop strike results in sudden stoppage, but it doesn't take much to damage some of these accessories. stoppage inspection, we are your source for engine documents in the last year, 16 FIND A DEALER. 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. Sun Sep 23, 2018 8:02 pm. Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. Note 10: 2400 hours TBO may apply. Dealing with them on this issue is fodder for another article, however. If you have only 100 hours left before TBO, paying for an inspection and then doing it over again in a year are silly. Recently, a transient aircraft hit a rubber traffic cone with the prop and kept going, taking off and disappearing into the western sky. A Textron Lycoming engine, that is being operated on a Part 91 aircraft, that had a sudden engine stoppage, not a propeller strike, must comply with AD 91-14-22 and Service Bulletin 475B at a minimum. This prototype edition of the document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. Without even trying, the FAA did what hasn't been done since 9/11: It cleared the airspace of commercial traffic. Engines that have been rebuilt by TCM will have a letter R at the end of the six digit numerical portion. continental prop strike ad. documents in the last year, 1487 However, they have the caveat that the inspecting mechanic may override that position and return the engine to service without disassembly and inspection if he or she feels that it is the prudent and responsible thing to do. You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. 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. If you can imagine a loose rod banging around inside your engine, you know it's bad. 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. Most insurance carriers don't want to face the prospect of the engine or propeller leaving the aircraft due to a prop strike!". continental prop strike ad. on Well discuss that distinction and exempt engines later in this article. The engine SN can be found in logbooks or other maintenance records. Dialing in the flange is worthless for this. offers a preview of documents scheduled to appear in the next day's My investigation started with my need for another engine for my Cessna 210. documents in the last year, 28 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. 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). documents in the last year, by the Transportation Security Administration We see flyweights and connecting hardware, in some designs, brutalized quite frequently by sudden stoppage. 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 Sep 28, 2016. 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. The President of the United States issues other types of documents, including but not limited to; memoranda, notices, determinations, letters, messages, and orders. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. 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 defects were not revealed during manufacture because specification material evaluation techniques were inadequate to detect these anomalies. 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. for better understanding how a document is structured but A. AC 43.13-1B has lots of general information in Chapter 8 on prop strikes. as a result of sudden stoppage. 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. Just a few short months ago, Textron Lycoming's Service Letter L-163C recommended taking the engine apart for inspection following any incident involving propeller blade damage. You can find the Service Bulletins for Continental Aerospace Technologies Type Certificated Gasoline Engines below. 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? This repetition of headings to form internal navigation links 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 But it's getting harder For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. documents in the last year, 876 For those engines that were overhauled in the field with factory new crankshafts, the crankshaft SN should be shown in work orders, log books or other maintenance records. 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. 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). documents in the last year, 946 All of the fractures have been grouped around certain manufacturing dates between April 1, 1998, and March 31, 2000, inclusive. 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. Basically anything that moves is subject to visual and other forms of nondestructive testing. What other services or inspections are being performed at the same time as the inspection? Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. At what point after a prop strike do you need an engine teardown and inspection? Highly stressed connecting rod bolts also take a beating from a prop-strike, which can cause a slight stretch. 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. documents in the last year, 117 documents in the last year, 37 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. 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. 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. Now that I had a definition, what would I have to do about such an event? on documents in the last year. To start my investigation, I wanted the official definition of a prop strike. Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. 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. documents in the last year, by the Veterans Affairs Department 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. This can cause major internal engine damage without visible prop damage. Both Lycoming and Continental have very specific requirements for disassembly and inspection. Federal Register issue. Do we think the engine makers are overly eager to have you tear down or dig into your engine? For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (d) of this AD. This condition, if not corrected, could result in crankshaft connecting rod journal fracture, which could result in total engine power loss, in-flight engine failure and possible forced landing. On the record, owners said that if someone came into their shop and said he or she had an aircraft with a prop strike, they would follow the procedures outlined above to the letter. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. 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.". Are there any hidden costs? 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. Nitride hardened cranks have a greater tendency to crack, since the nitride hardened materials resist bending. PROPELLER STRIKE INSPECTIONS. The engine for sale was the model I needed, with about 1,000 hours since a factory overhaul. On Lycoming engines, which are not nitrided, the flange can be bent. I watched the video and figured the pilot had reduced power before hitting the ditch. has no substantive legal effect. Start dateSep 28, 2016. Comments may also be sent via the Internet using the following address: 9-ane-adcomment@faa.gov. Comments sent via the Internet must contain the docket number in the subject line. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. These can be useful Over the years, Continental has built a service offering for aircraft operators and owners These services include engine overhauls at the Continental factory service center for Continental, Titan, and LYCOMING engines, factory overhauls for Continental AvGas engines, sudden stoppage/propeller strikes, shock inspections, fleet overhaul programs, Jet-A burning engine Use the PDF linked in the document sidebar for the official electronic format. 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. FAA# JL4R288M | EASA.145.4115 | Toll Free: 800-282-3202 | 954-970-3200 Are the minimum legal requirements being met? 49 U.S.C. New Documents Comments for inclusion in the Rules Docket must be received on or before January 26, 2001. 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. This is a minor or major prop repair issue, but not a potential engine tear down issue. Does 500 rpm fit that bill? 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.
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