AD 2006-06-16 Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, and LO-360 Series Reciprocating Engines

Makes named: lycoming. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Lycoming Engines AEIO-360, IO-360, O-360, LIO-360, and LO-360 series reciprocating engines, manufactured new or rebuilt, overhauled, or that had a crankshaft installed after March 1, 1999. These engines are installed on, but not limited to, the following aircraft:   Engine model Manufacturer Aircraft model AEIO-360-A1B6 Moravan Z242L Zlin   Scottish Avia Bulldog   Valmet L-70 Vinka AEIO-360-A1E6 Integrated Systems Omega IO-360-A1B6 Aircraft Manufacturing Factory Mushshak   Beech C-24R Sierra or 200 Sierra   Cessna R-G Cardinal   Korean Air Chang Gong-91   Lake LA-4-200 Buccaneer   Mooney M-20-J   Partenavia P-68 Series Observer   Saab MFI-15 Safari or MFI-17 Supporter   Scottish Avia Bulldog   Socata TB-200 IO-360-A1B6D Cessna R-G Cardinal   Mooney M-201   Siai Marchetti S-205 IO-360-A3B6 Mooney M-201   Mod Works Trophy 212 Conversion IO-360-A3B6D Mooney M20J-201 IO-360-C1C6 Piper PA-28R-201 Arrow   Ruschmeyer MF-85 IO-360-B1G6 American Blimp IO-360-C1G6 Zeppelin Blimp IO-360-C1E6 Piper PA-34-200 Seneca I LO-360-A1G6D Beech 76 Duchess LO-360-A1H6 Piper PA-44-180 Seminole O-360-A1F6 Cessna 177 Cardinal O-360-A1F6D Cessna 177 Cardinal O-360-A1G6D Beech 76 Duchess O-360-A1H6 Piper PA-44-180 O-360-E1A6D Piper PA-44-180 O-360-F1A6 Cessna C-172RG Cutlass RG IO-360-C1D6 Sold as a spare engine LIO-360-C1E6 Sold as a spare engine LO-360-E1A6d Sold as a spare engine LIO-360-C1D6 Sold as a spare engine

You are responsible for having the actions required by this AD performed within 50 hours time-in-service or 6 months after the effective date of this AD, whichever is earlier, unless the actions have already been done. (f) If Lycoming Engines manufactured new, rebuilt, overhauled, or replaced the crankshaft in your engine before March 1, 1999, and you haven't had the crankshaft replaced, no further action is required. (g) If Table 1 of Supplement No. 1 to Lycoming Mandatory Service Bulletin (MSB) No. 566, dated November 30, 2005, lists your engine serial number (SN), use Table 2 of Supplement No. 1 to verify if your crankshaft SN is listed. (h) If Table 1 of Supplement No. 1 to Lycoming MSB No. 566, dated November 30, 2005, does not list your engine SN, use Table 2 of Supplement No. 1 to verify if your crankshaft SN is listed, if an affected crankshaft was installed as a replacement. (i) If Table 2 of Supplement No. 1 to Lycoming Engines MSB No. 566, dated November 30, 2005, lists your crankshaft SN, replace the crankshaft with a crankshaft that is not listed in Table 2 of Supplement No. 1 to Lycoming MSB No. 566, dated July 11, 2005. (j) The engine and crankshaft SNs listed in Table 1 and Table 2 of Supplement No.1 to Lycoming Engines MSB No. 566 are different from the engine and crankshaft SNs affected by Lycoming MSBs No. 552, No. 553 and No. 566; and ADs 2002-19-03 and 2005-19-11. Prohibition Against Installing Certain Crankshafts (k) After the effective date of this AD, do not install any crankshaft that has a SN listed in Table 2 of Supplement No. 1 to Lycoming MSB No. 566, dated November 30, 2005, into any engine. Alternative Methods of

This AD results from a crankshaft failure in a Lycoming LO-360-A1H6 reciprocating engine. We are issuing this AD to prevent failure of the crankshaft, which could result in total engine power loss, in-flight engine failure, and possible loss of the aircraft.