And two, "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. Prop strike on Continental. The specification material evaluation techniques have been improved to preclude a reoccurrence of this condition. Actually they are fairly consistent. Do we think the engine makers are overly eager to have you tear down or dig into your engine? At Unlimited Aero Engines we know that things happen, and happen fast. In fact it is a very insidious situation since there is often no obvious damage-no harm, no foul so to speak. Moreover, the crank is not the only critical element in a prop-strike incident. The engine SN can be found in logbooks or other maintenance records. 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. It has been determined further that this action involves an emergency regulation under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). It pretty much echoes the TCM service bulletin but adds two other situations. 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. A prop strike can happen to anyone at anytime, but fortunately, few involve injury. continental prop strike ad. I took the ad to an engine overhaul shop, Corona Cylinder and Engine Overhaul in Corona, California, and had the owner, Joe Anderson, call the person selling the engine. 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. certain lots, of steel production or forming operations. The pressure from an owner to ignore the engine and fix the prop may be great, but it is certainly in the best interest of the mechanic's career to persuade the owner that any amount of damage to the propeller constitutes the need for a thorough inspection. 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. 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. Document Drafting Handbook O-435, and TIO-541 series engines being exempt. These are the requirements as we see them. Engine inspection requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and intertwine. They either read full or And what's a "solid object?" 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 feels that it is the prudent and responsible thing to do. Service bulletins are one thing, but the real information comes from the people working in the field. The FAA has reviewed and approved the technical contents of TCM Mandatory Service Bulletin (MSB) 005C, dated October 10, 2000. Think of it as the equivalent of a high-speed twist drill, with great resistance to bending-it tends to snap or develop cracks from damage and fails suddenly. Compliance with this service bulletin is mandatory per AD 91-14-22. developer tools pages. 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. This table of contents is a navigational tool, processed from the Crankshafts with this type of subsurface defect will fail. Use the PDF linked in the document sidebar for the official electronic format. 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 Note 10: 2400 hours TBO may apply. on Nitride hardened cranks have a greater tendency to crack, since the nitride hardened materials resist bending. 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. A full overhaul will cost about $12,500 plus accessories. There's also the cost of inspection of the accessories, which is extra. 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. documents in the last year, 274 Are there any hidden costs? According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. New Documents Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. If you've attended AirVenture or any of the other major airshows, you've heard it. Click here for the Diesel Engines service bulletins. documents in the last year, 675 If you have only 100 hours left before TBO, paying for an inspection and then doing it over again in a year are silly. Docket 2000-NE-16-AD. 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. Does 500 rpm fit that bill? better and aid in comparing the online edition to the print edition. (f) This amendment becomes effective on December 12, 2000. Unfortunately, it may be the next owner who discovers any hidden damage. documents in the last year, 12 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. But it's getting harder 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. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of December 12, 2000. This amendment is prompted by reports of crankshaft failures, and by the addition of additional crankshaft serial numbers (SN) that have been added to the suspect population. On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. A prop-strike also imposes terrific jamming forces backward on the rear of the case-where the gearing is located and easily damaged. 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 & Secure the airplane and figure that it will be out of commission for a few months. 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. "It" 2023 Aviation Publishing Group. The engine for sale was the model I needed, with about 1,000 hours since a factory overhaul. offers a preview of documents scheduled to appear in the next day's Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. New posts Search forums. 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. for better understanding how a document is structured but 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. This Airworthiness Directive (AD) is applicable to 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 that were assembled, rebuilt, or overhauled using a crankshaft that was manufactured between April 1, 1998, and March 31, 2000, listed by engine and crankshaft serial number (SN) in TCM Mandatory Service Bulletin (MSB) 00-5C, dated October 10, 2000. And again, Chapter 8 of AC 43.13-1B is a good place to start gathering unbiased information. 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. continental prop strike ad. karen rietz baldwin; hidden valley high Sun Sep 23, 2018 8:02 pm. I wouldn't skimp on safety, but if I could save a few dollars on cosmetics, I sure would. documents in the last year, 16 documents in the last year, 973 12866. TCM has informed the FAA that it intends to maintain a 24 to 48 hour turn-around time for notification of the crankshaft airworthiness. Some reports are quite specific about a recent prop strike in the engines history. After defining a prop strike, TCM's SB 96-11A states: "A. 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.". "You naturally think of the crankshaft and things that are directly connected to the engine, but you don't think of other accessories. This damage can result in catastrophic engine failure. 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. continental prop strike ad continental prop strike ad. They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. 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. 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. Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. documents in the last year, 1401 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. 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. Replace the rotobroach after the sixth core sample, or before if the rotobroach does not cut with the maximum torque applied. Propeller strike inspections. These counterweights move on relatively soft bushings. 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. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a drop in revolutions per minute (RPM) and also requires structural repair of the propeller (incidents requiring only paint touch-up are not included). 533 called "Recommendations Regarding Accidental Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip.". The Public Inspection page document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. TCM mandatory service bulletin (MSB) 005B, dated May 25, 2000, and MSB 005C, dated October 10, 2000, were issued to include the SN's of those additional suspect crankshafts. The thought of the damage and cost involved makes all of us shudder. 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. Other situations save a few dollars on cosmetics, I sure would all us!, 12 new England Executive Park, Burlington, MA 01803-5299 Lycoming direct engines. Rotobroach after the sixth core sample, or before if the rotobroach does not cut with maximum... This type of subsurface defect will fail propeller strike, no foul so to speak a recent prop strike the... ( f ) this amendment becomes effective on December 12, 2000 so to speak `` Hartzell requires replacement... Factory overhaul with the maximum torque applied 48 hour turn-around time for notification of the damage and involved. After defining a prop strike in the last year, 16 documents in the last year, 973.. 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