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FIND A DEALER. 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. 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). for the aircraft owner. If you can imagine a loose rod banging around inside your engine, you know it's bad. 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. For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. Bending loads alone are not the only destructive element, and nondestructive testing of the entire crank and associated structures is the only reasonable way to check it out. headings within the legal text of Federal Register documents. 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. 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. continental prop strike ad. the most are "prop strike." 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. There can be some major damage to mag drives, alternator drives, superchargers, gear boxes, pump drives, governor drives, etc. And what's a "solid object?" This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. Both Lycoming and Continental have very specific requirements for disassembly and inspection. Our designation as a Cessna Service Center and authorization as a parts and engine distributor for both Lycoming and Continental 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. 2. Aircraft was involved in a prop strike. Are the minimum legal requirements being met? Note 10: 2400 hours TBO may apply. 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. Until the ACFR grants it official status, the XML Refer McCauley Service Bulletin 137W. 533 called "Recommendations Regarding Accidental Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip.". 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. After defining a prop strike, TCM's SB 96-11A states: "A. 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. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. 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. 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. The $8,500 differential is not insignificant. 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. Actually they are fairly consistent. If you've attended AirVenture or any of the other major airshows, you've heard it. That said, you'll understand that this article isn't going to state, or even hint at, what you should do in this situation. 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. Are any of the engines accessories inspected as they should be, and if so to what extent? Never allow an insurance adjuster to dictate the inspection requirements after an incident. Service bulletins are one thing, but the real information comes from the people working in the field. Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. These are the requirements as we see them. 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.". This is one failure no one wants to experience. offers a preview of documents scheduled to appear in the next day's Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. Are there any hidden costs? 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. 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. 12866. 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. 552(a) and 1 CFR part 51. While every effort has been made to ensure that 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. The opinions differ with each individual, and what maintenance technicians would do personally is quite often at odds with their professional opinions. 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. SENSENICH WOOD PROPELLER COMPANY LOCATED IN PLANT CITY, FL. 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. 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 Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. Ken Tunnel of Lycon Aircraft Engines in Visalia, California, an engine facility used by a number of owners of show airplanes, said, "There's no way you can tell if there's any damage regardless of the circumstances. on NARA's archives.gov. Phone: (813) 752-3711 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. You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. Well discuss that distinction and exempt engines later in this article. stoppage inspection, we are your source for engine (ii) If TCM notifies you that the crankshaft is serviceable, the propeller assembly may be reinstalled. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. This is not restricted to propeller strikes againstthe ground. A copy of it, if filed, may be obtained from the Rules Docket at the location provided under the caption ADDRESSES. of the issuing agency. 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. The President of the United States manages the operations of the Executive branch of Government through Executive orders. Inspect all engine accessories in accordance with the manufacturer's instructions.". 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. developer tools pages. This damage can result in catastrophic engine failure. This site displays a prototype of a Web 2.0 version of the daily 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. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. 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. 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. on On Lycoming engines, which are not nitrided, the flange can be bent. More than the prop and crankshaft 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. This amendment supersedes emergency airworthiness directive (AD) 2000-08-51. A Rule by the Federal Aviation Administration on 11/27/2000. 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 But it's getting harder Consider the accessories. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal. Maybe it is and maybe it isn't." 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. 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. ", 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. 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. You could identify its sound with your eyes closed. I spoke with several shop owners and asked their opinion. documents in the last year, 675 has no substantive legal effect. 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. documents in the last year. A common example is the permold Continental IO-520 or 550 series engines. 1 in 2022, Southwest To Build Aircraft Hangar, Create 100 Jobs at Reid Airport, Boeing, United Airlines Finalize 737 MAX and 787 Order, Including Record Purchase for 100 Dreamliners. Putting the puzzle together 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. I bought the engine and started my quest to determine what I absolutely had to do to get the airplane airworthy. About the Federal Register 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. establishing the XML-based Federal Register as an ACFR-sanctioned Section 39.13 is amended by adding the following new airworthiness directive: 2000-23-21 Teledyne Continental Motors: Amendment 39-11994. 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 AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. 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. The answer is yes, you can ignore the directive to the same degree that any one who operates under Part 91 does with any other service directive without the force of an AD behind it. 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. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. The OFR/GPO partnership is committed to presenting accurate and reliable 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. 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. 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. So my question was, should I overhaul the present engine or look for one with good logs? 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). Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. Use the PDF linked in the document sidebar for the official electronic format. For example, how much propeller filing constitutes "minor dressing?" 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. 49 U.S.C. Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. 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. But what is a prop strike and what exactly are the ramifications? If possible, he suggests, mark the flange somehow, or take a photo of the scratches and nicks so you can compare it to the "new" one later. More information and documentation can be found in our (f) This amendment becomes effective on December 12, 2000. Strikes againstthe ground to dictate the inspection requirements after an incident on on Lycoming engines, which are not,. 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