Section 39.13 is amended by adding the following new airworthiness directive: 2000-23-21 Teledyne Continental Motors: Amendment 39-11994. And what's a "solid object?" Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. I watched the video and figured the pilot had reduced power before hitting the ditch. 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. Secure the airplane and figure that it will be out of commission for a few months. Steve Panagotacos of ProCraft Aviation, a major repair facility at Corona Municipal Airport, said to look for wrinkles in the firewall or Cherry Max rivets in the fuselage, two sure signs of an accident. This is one failure no one wants to experience. This proposed rule does not have federalism implications, as defined in Executive Order No. provide legal notice to the public or judicial notice to the courts. the material on FederalRegister.gov is accurately displayed, consistent with (ii) You may use each rotobroach bit to obtain up to six core samples. on CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. documents in the last year, 675 They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. The investigation revealed that the crankshafts failed due to subsurface defects in the number one crankshaft connecting rod journal. A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. I won't list them all here, but some of the more expensive ones are: hydraulic valve lifters, connecting rod bearings, the crankshaft's main and thrust bearings, all needle, ball, and roller bearings, exhaust valves, valve springs, piston pins, pistons, crankcase through bolts, all the hardware, seals, gaskets, O-rings, and lots of other small stuff. 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. Other Lycoming literature mentions the importance to check the accessories as does TCM. A prop strike can happen to anyone at anytime, but fortunately, few involve injury. documents in the last year, 946 Register (ACFR) issues a regulation granting it official legal status. That action was prompted by reports of crankshafts on which the connecting rod journals had fractured. 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 incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. documents in the last year, 534 Phone: (813) 752-3711 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. on 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. on NARA's archives.gov. At Unlimited Aero Engines we know that things happen, and happen fast. 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. Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. Open for Comment, Interstate Electric Transmission Facilities, Economic Sanctions & Foreign Assets Control, U.S. The decision was made for me by an advertisement in Trade-A-Plane. 13132, because it would not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. 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. The specification material evaluation techniques have been improved to preclude a reoccurrence of this condition. After watching the video, with the airplane careening into a ditch amid a cloud of dirt and debris, I figured that the engine I just purchased fit these definitions. by the Federal Energy Regulatory Commission In fact, the customers were sold their own crank. 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 The documents posted on this site are XML renditions of published Federal (f) This amendment becomes effective on December 12, 2000. All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. Disregard the letter R.. 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. New posts Search forums. We see flyweights and connecting hardware, in some designs, brutalized quite frequently by sudden stoppage. 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. My investigation started with my need for another engine for my Cessna 210. The FAA has reviewed and approved the technical contents of TCM Mandatory Service Bulletin (MSB) 005C, dated October 10, 2000. Although many in the industry still like to interpret rules to their advantage, the mechanic is being faced with fewer and fewer "outs" [FR Doc. Are there any hidden costs? Refer McCauley Service Bulletin 137W. You can bet the fellow who hit the traffic cone never made a logbook entry unless the engine had to be repaired. 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. 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 President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. 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. 12866. 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. You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. 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. 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. FIND A DEALER. 552(a) and 1 CFR part 51. regulatory information on FederalRegister.gov with the objective of This can cause major internal engine damage without visible prop damage. developer tools pages. Second, any time foreign object damage requires propeller removal for repairs other than the minor dressing of the blades as mentioned above, the incident is considered a propeller strike and must be inspected as outlined in SB 96-11B. 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. 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). It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents. Register documents. 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. 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 The Public Inspection page documents in the last year, 12 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. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. 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. offers a preview of documents scheduled to appear in the next day's Document Drafting Handbook That said, you'll understand that this article isn't going to state, or even hint at, what you should do in this situation. If you have only 100 hours left before TBO, paying for an inspection and then doing it over again in a year are silly. Airmark Overhaul, Inc. 6001 NW 29th Avenue Fort Lauderdale, FL 33309. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal. 2023 Endeavor Business Media, LLC. I've heard that a Continental doesn't require a tear down and inspection as a Lycoming does, but looking at Continental's Service Bulletin SB96-11B it looks Home. 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. Either may require additional inspection but neither may negate the inspections required by the FARs. At what point after a prop strike do you need an engine teardown and inspection? In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). Submit comments in triplicate to the Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, Attention: Rules Docket No. The actions are required to be accomplished in accordance with the service bulletin described previously. If you need someone to remove and reinstall the engine, that's another $1,800. documents in the last year, 1487 My group also argued about the propeller hitting grass and water. 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. They either read full or The engine for sale was the model I needed, with about 1,000 hours since a factory overhaul. Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. 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. 01/17/2023, 202 The engine SN can be found in logbooks or other maintenance records. This amendment supersedes emergency airworthiness directive (AD) 2000-08-51. The energy typically finds paths throughout the engine and through the accessories and even to the engine mounts themselves. 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. Basically the fuel gauges in the center console are shorting out. 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. documents in the last year, 16 Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. PROPELLER STRIKE INSPECTIONS. 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. Aircraft was involved in a prop strike. 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. 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. Document page views are updated periodically throughout the day and are cumulative counts for this document. Register, and does not replace the official print version or the official 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. 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 documents in the last year, 41 Well, for one i dont think i want to take out any of the clubs planes ever again. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to documents in the last year, by the Transportation Security Administration Some geared alternators shafts use gears that are designed to slip on overloads, but older versions of this alternator gear do not have this design, and the gear shear design is for an alternator failure not a crank stoppage. The bulletin reads as follows: Are any of the engines accessories inspected as they should be, and if so to what extent? (2) Any incident during engine operation in which the propeller impacts a solid object that causes a This is not restricted to propeller strikes againstthe ground. 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. 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. Start dateSep 28, 2016. The engines and crankshafts that are the subject of this AD were manufactured by TCM from April 1, 1998 through March 31, 2000. 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. Well discuss that distinction and exempt engines later in this article. 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. Moreover, the crank is not the only critical element in a prop-strike incident. Dialing in the flange is worthless for this. 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. Actually they are fairly consistent. Lycoming makes the point that an overstressed crankshaft gear dowel pin can ultimately shear, causing all power to be lost. 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? DeJoris explains, "Take for example the prop governor drive the rotating mass in the prop governor, mainly the flyweight assembly can really be problem if suddenly stopped. 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 Each document posted on the site includes a link to the 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. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. Still others will only pay for the labor to do the job and will not pay for any parts. 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. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. (1) Do the crankshaft material inspection (crankshaft propeller flange core sample) in accordance with sections A through J of TCM MSB 00-5C, dated October 10, 2000, as follows: (i) Use the specialized tools and equipment provided by TCM as listed in section A of TCM MSB 00-5C, dated October 10, 2000. This damage can result in catastrophic engine failure. On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. Thread starterkevmor99. He adds, "This limits their liability exposure. continental prop strike ad 21 May. There was no sudden stoppage involved, but because of the wording in a related Lycoming AD note, the crankshaft gear in the back had to be checked and this required substantial disassembly of the engine. legal research should verify their results against an official edition of PROPELLER STRIKE INSPECTIONS. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. 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. Replace the rotobroach after the sixth core sample, or before if the rotobroach does not cut with the maximum torque applied. O-435, and TIO-541 series engines being exempt. This repetition of headings to form internal navigation links (ii) If TCM notifies you that the crankshaft is serviceable, the propeller assembly may be reinstalled. On Lycoming engines, which are not nitrided, the flange can be bent. 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. documents in the last year, 876 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." Should he also have performed the obligatory engine inspections? The flange will break before it bends. 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.". documents in the last year, by the Fish and Wildlife Service 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. There's also the cost of inspection of the accessories, which is extra. Advertisement in Trade-A-Plane strike do you need someone to remove the prop and send it in for repair this supersedes... Additional inspection but neither may negate the inspections required by the FARs all power to be repaired Transmission,... Motors: Amendment 39-11994 `` Part 1Propeller strike incidents accessories as does TCM engine, that 's another $.... 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