continental prop strike ad

Compliance with this service bulletin is mandatory per AD 91-14-22. The AD specifies the inspection at each engine overhaul, after a propeller strike, sudden stoppage, or whenever gear train repair is required. Lycoming's new SB seems to generalize the term propeller strike and sudden stoppage to be quite inclusive. Our designation as a Cessna Service Center and authorization as a parts and engine distributor for both Lycoming and Continental A propeller strike (according to this Lycoming bulletin) is defined as follows:(It has all the same definitions found in AD 2004-10-14 that we printed in italics but has additional information): Circumstances which surround accidents are many and varied; therefore, the circumstances of the accident can not, in our opinion, be used to predict the extent of the damage to the engine or assure its future reliability. In fact, the customers were sold their own crank. Well, for one i dont think i want to take out any of the clubs planes ever again. 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. Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. How about 50 rpm? Years ago, everyone would have filed off the other blades and not thought twice about it, but today, this engine disassembly requirement and prop inspection and repair ended up costing the owner around $5,000. Aircraft was involved in a prop strike. the official SGML-based PDF version on govinfo.gov, those relying on it for 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. McCauley hubs must be retired if any of the blades within the assembly are bent beyond repair limits inboard of the 85 percent blade radius. Propeller strike inspections. Many insurance companies will not pay for any inspection requirements unless damage from the incident is found during that inspection. The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. Consider the accessories. At what point after a prop strike do you need an engine teardown and inspection? If you need someone to remove and reinstall the engine, that's another $1,800. 2 Blade Continental O-200/Lycoming O-235 Ground Adjustable STOL Propeller $ 74CK $ 76AK-2 $ FIND A DEALER NEAR YOU. Still others will only pay for the labor to do the job and will not pay for any parts. documents in the last year, 41 Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. 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 & continental prop strike ad 21 May. The FAA has reviewed and approved the technical contents of TCM Mandatory Service Bulletin (MSB) 005C, dated October 10, 2000. Refer McCauley Service Bulletin 137W. After defining a prop strike, TCM's SB 96-11A states: "A. That action was prompted by reports of crankshafts on which the connecting rod journals had fractured. According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. by the Federal Energy Regulatory Commission (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. 2023 Endeavor Business Media, LLC. documents in the last year, by the Transportation Security Administration 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. 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. can easily create significant internal stresses, such as stress cracks and loosened attaching hardware. documents in the last year, 28 This damage can result in catastrophic engine failure. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. 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. 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 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. Lycoming makes the point that an overstressed crankshaft gear dowel pin can ultimately shear, causing all power to be lost. Its entirely possible after a sudden engine stoppage for there to be severe internal damage and yet the prop looks perfectly OK even if the prop was either totally stopped or the rpm dropped by the incident. Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. 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. FIND A DEALER. 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. 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. Issued in Burlington, Massachusetts, on November 13, 2000. the most are "prop strike." Secure the airplane and figure that it will be out of commission for a few months. 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. The documents posted on this site are XML renditions of published Federal Accordingly, the FAA has not consulted with state authorities prior to publication of this proposed rule. This can cause major internal engine damage without visible prop damage. Thread starterkevmor99. the Federal Register. Register (ACFR) issues a regulation granting it official legal status. 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. provide legal notice to the public or judicial notice to the courts. +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 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. This damage can result in catastrophic engine failure. Lycoming, in their prop-strike Service Bulletin 533A, takes the approach that the safest procedure is to take the engine apart for inspection following any incident involving propeller blade damage. I watched the video and figured the pilot had reduced power before hitting the ditch. Prop strike on Continental. Although many in the industry still like to interpret rules to their advantage, the mechanic is being faced with fewer and fewer "outs" 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. 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. 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. A propeller strike is dangerous, not only because it damages the propeller but also because it can 2023 Aircraft Owners and Pilots Association, Better Together: Industry Resources Help Improve Aviation Safety. A prop that hits so hard as to bend the crank flange is only one of several considerations. Dialing in the flange is worthless for this. the most are "prop strike." In another incident a prop hit a small rock, which had been dislodged and thrown back by a larger aircraft. A prop-strike also imposes terrific jamming forces backward on the rear of the case-where the gearing is located and easily damaged. 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.". Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. While every effort has been made to ensure that But it's getting harder 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. On TCM engines with the geared alternators up front, he has seen the mounting flange and the gear drive bolts break during a prop strike. 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. ", Airworthiness Directive 2004-10-14 is applicable to Lycoming engines that experienced a prop strike. Prop strike. These two words are guaranteed to make any pilot wince. So, in a roundabout way by the last paragraph, Lycoming is saying its the repair facilitys call unless your engine is one found in the later AD 2004-10-14, which applies to a lot of Lycoming engines. 01/17/2023, 159 Teledyne Continental Motors has a slightly different approach, but not much different in practice. As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? 01/17/2023, 284 We know of no ADs on TCM engines in this area to muddy the waters, so its the owners decision unless they are operating other than under Part 91, such as Part 135 where compliance with service directives is typically mandatory. 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. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. These counterweights move on relatively soft bushings. He also said prospective owners should review the logs to see if the propeller has been changed. O-435, and TIO-541 series engines being exempt. 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. 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. Information about this document as published in the Federal Register. headings within the legal text of Federal Register documents. 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. There used to be, but it was kind of informal and there was a lot open to interpretation. #1. Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. 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. legal research should verify their results against an official edition of 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. Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. 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. The President of the United States manages the operations of the Executive branch of Government through Executive orders. This is not restricted to propeller strikes againstthe ground. Another problem area is in engines with crank counterweights, a very common design. Also, some engines with a gear-driven alternator have a large, relatively thin and very vulnerable gear bolted to the forward end of the crankshaft. 01/17/2023, 202 The engines and crankshafts that are the subject of this AD were manufactured by TCM from April 1, 1998 through March 31, 2000. Putting the puzzle together (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. A. Includes: Fuel Injection Spyder Starter Alternator Bendix Magnetos Gamijectors I will be more than happy to ship this engine to you. Unfortunately, it may be the next owner who discovers any hidden damage. Start dateSep 28, 2016. Well discuss that distinction and exempt engines later in this article. from 54 agencies. It also does not equivocate to any degree on an engine tear down being the mandatory procedure, which is described in the bulletin. Thread starter kevmor99; Start date Sep 28, 2016; K. kevmor99 A full overhaul will cost about $12,500 plus accessories. At least thats our goal. 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. Forums. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. 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. It has been determined further that this action involves an emergency regulation under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979).
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