Supersedes Service Instruction No. 1436 September 29, 2010 MODELS AFFECTED O­360­A3A Engine TIME OF COMPLIANCE At Owner’s discretion In some instances it has been found that operators of the O­360­A3A engine, with certain propellers, have experienced vibration in the right magneto. As a product improvement, a modification kit, P/N LW­15436, is available to the field. Installation of this kit...

Supersedes Service Instruction No. 1424 December 15, 2009 MODELS AFFECTED All Lycoming reciprocating engines using P/N 15B26066 except: O-235 series; O-320-H series; O, LO, TO, LTO-360-E series; and TIO, TIGO-541 series. TIME OF COMPLIANCE Any time new P/N 15B26066, hydraulic tappet plunger assemblies, are installed. Whenever a new plunger assembly is installed, perform the following steps to...

DATE: February 23, 2009 MODELS AFFECTED All Lycoming new, overhauled, rebuilt, or repaired IO-360-A1B6, -B1G6, -C1E6, -C1G6, O-360-A1G6, and TIO-360-C1A6D engines. TIME OF COMPLIANCE At the next maintenance event or at annual inspection, whichever occurs first. Lycoming has determined that a crack may develop in the crankcase near the alternator attaching bracket on any of the above listed engine...

Supersedes Service Instruction No. 1511 May 26, 2005 MODELS AFFECTED The following Textron Lycoming four cylinder engines which utilize fixed pitch propellers except those installed in rotary wing aircraft. All 320 series engines; and All 180 horsepower, 360 series engines except the O-360-A4A, -A4D, -A4G, -A4J, -A4K, -A4M, -A4N, -A4P, -C4F, -C4P, and AEIO-360-B4A engine models. TIME OF COMPLIANCE...

There are many who look for an aircraft engine on the open market. While there is nothing wrong with this approach to acquiring a needed power plant, it sometimes results in an unfortunate choice. Perhaps a little information on the possible pitfalls may help to reduce the number of bad choices. Individuals working on home-built aircraft may be particularly susceptible to this type of error. At...

Supersedes Service Instruction No. 1299A September 24, 2010 MODELS AFFECTED O-360 with serial numbers up to and including 19774-36A. IO-360 with serial numbers up to and including 13275-51A. LIO-360 with serial numbers up to and including 1062-67A. O-540 with serial numbers up to and including 17269-40. IO-540 with serial numbers up to and including 12775-48. TIO-540 with serial numbers up to and...

Supersedes Service Instruction No. 1267C August 28, 2009 MODELS AFFECTED All Lycoming engines with 5-1/8 inch cylinder bore: O-320; IO-320; O-340; O, IO, HO, LO, LIO, AIO, HIO, TIO, VO and IVO-360; IO-390; GO, VO and TVO-435; GO, GSO, IGSO-480; O, IO, VO, TIO, TVO, TIVO and IGSO- 540; TIO and TIGO-541; IO-580, AEIO-580; IO-720. TIME OF COMPLIANCE Any time piston pin plugs are replaced. There are...

Supersedes Service Bulletin No. 577 September 19, 2008 MODELS AFFECTED Lycoming O­320; AEIO­360, IO­360, O­360; AEIO­540, IO­540, TIO­540 model engines with serial numbers listed in Table 1. Newly affected serial numbers are highlighted in gray. Lycoming P/N 31A22100, 31B22101 and 31B22104 Sky­Tec starters sold as spares with Sky­Tec serial numbers listed in Table 2. Newly affected serial numbers...

DATE: July 11, 2005 MODELS AFFECTED Any Lycoming engine model specified below manufactured, rebuilt, overhauled or repaired after March 1, 1999: Lycoming O-540, IO-540, AEIO-540 and TIO-540 engines rated at 290 horsepower or lower as described in Section 1 and listed in Table 1. Lycoming IO-540-P, -S, -AA engines rated at 250-290 horsepower by Lycoming as described in Section 2 and listed in Table...

Supersedes Service Bulletin No. 530A November 22, 2004 MODELS AFFECTED The following Lycoming four cylinder engines which utilize fixed pitch propellers except new engines shipped after February 15, 1997. All 235 series engines; All 290 series engines; All 320 series engines; and All 180 horsepower, 360 series engines except O-360-A4A, -A4AD, -A4D, -A4G, -A4J, -A4K, -A4M, -A4N, -A4P, -A5AD, -C4F,...