Airworthiness Directive · Amendment 39-13519 · Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines
Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines
This AD applies to all Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 series reciprocating engines with crankshaft gear retaining bolts, part number (P/N) STD-2209 installed, except: (1) O-540-F series engines to which AD 99-03-05 applies and on which the bolt has not been subsequently replaced, and (2) Engines on which the bolt was installed during original assembly or was replaced by Lycoming as specified in Service Bulletin (SB) 554 after November 10, 1998, and (3) Engines with a bolt P/N STD-2209 supplied as part of a bolt replacement kit 05K19987, 05K23325, 05K23326, 05K23327, 05K23335, or 05K23336, and (4) Engines with single-drive dual magnetos. (5) These engines are installed on, but not limited to the following aircraft: Aero Commander. (500), (500-B), (500-E), (500-U) Aero Mercantil. Gavilan. Aerofab. Renegade 250. Bellanca Aircraft. Aries T-250 Britten-Norman. (BN-2). Cessna Aircraft. Skylane C-182, Stationair C-206, Turbo Skylane T182T, Turbo Stationair T-206 Christen. Pitts (S-2S), (S-2B). Commander Aircraft. 114TC, 114B DeHavilland. (DH-114-2X) Dornier. (DO-28-B1) Evangel-Air. Extra-Flugzeugbau. Extra 300. Found Bros. (FBA-2C), Centennial (100) Gippsland. GA-200. Helio. Military (H-250). King Engineering. Angel. Maule. MT-7-260, M-7-260, MX-7-235, MT-7-235, M7-235, Star Rocket (MX-7-235), Super Rocket (M-6-235), Super Std. Rocket (M-7-235). Mooney Aircraft. "TLS" M20M. Moravan. Zlin-50L Pilatus Britten-Norman. Islander (BN-2A-26), Islander (BN-2A-27), Islander II (BN-2B-26), Islander (BN-2A-21), Trislander (BN-2A-Mark III- 2), Islander (BN-2B). Piper Aircraft. 700P Aerostar, Aerostar 600A, Aerostar 601B, Aerostar 601P, Apache (PA-23 "235"), Aztec (PA-23 "250"), Aztec (PA-23 "250"), Comanche (PA-24 "250"), Comanche (PA-24 "260"), Aztec F, Aztec C (PA-23 "250", Cherokee (PA-24 "250"), Cherokee (PA-28 "235"), Cherokee Six (PA-32 "260", Cherokee Six (PA-32-300). "LANCE", Comanche (PA-24 "150"), Comanche (PA-24 "250"), Comanche (PA-24), Comanche (PA-24 "260"), Comanche 260, Mirage (PA-46-350P, Navajo (PA-31), Navajo (PA-31-300), Navy Aztec (PA-23 "250"), Pawnee (PA-24 "235"), Pawnee (PA-25 "260"), Saratoga (PA-32-300), Brave 300, Sequoia 602P, T-1020, T35, Turbo Aztec (PA-23-250), Turbo Saratoga TC (PA-32-301T) S.O.C.A.T.A. Rallye 235CA., Rallye 235GT, Rallye 235C, TB-20
The FAA is superseding an existing airworthiness directive (AD) for Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 series reciprocating engines. That action requires replacing certain zinc-plated crankshaft gear retaining bolts. This action retains that requirement, but expands the population of affected engines. In addition, this AD adds five additional kits for replacing the crankshaft gear retaining bolts. This AD results from notification from the Manufacturer of 161 engines not identified in the previous AD. This AD also results from approval of the five additional kits as alternative methods of compliance with AD 2002-23-06. We are issuing this AD to prevent loss of all engine power and possible forced landing.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
