DATE: August 15, 2003 Supplement No. 5 to Service Bulletin No. 554 does not supersede Supplement No. 3 to Service Bulletin No. 554 or Supplement No. 4 to Service Bulletin No. 554. After extensive and thorough search of all engine and gear bolt records, Lycoming has determined that there are an additional 161 engines that could possibly have one of the suspect bolts. This Supplement No. 5 to...

Supersedes Service Bulletin No. 555 and Supplement No. 2 to Service Bulletin No. 555 May 16, 2003 MODELS AFFECTED New, factory rebuilt or factory overhaul engines listed in Table 1. NOTE: Service Bulletin No. 555 also affects any engine that has had the following oil pump bodies field installed: 1. P/N 78528 shipped between 5/1/01 and 1/20/03. 2. P/N 78890 shipped between 9/17/01 and 1/20/03. 3. P...

DATE: May 7, 2003 MODELS AFFECTED This Service Bulletin applies to new, rebuilt, overhauled or repaired Lycoming fuel injected engines shipped from Lycoming between January 30, 2003 and May 5, 2003 equipped with Precision Airmotive Corporation fuel injection servos, Model RSA-5 or RSA-10 identified in Precision Service Bulletin No. PRS-105. Fuel injected engines are identified by the letter “I” in...

DATE: April 28, 2003 The P/N 18M22676 connecting rod bearing is no longer available from Lycoming. It has been replaced by P/N LW-16143.

DATE: April 2, 2003 The AMOC (see attached) accepts the following Lycoming kits for compliance with AD #2002-23-06: 05K23325 – TIO/LTIO-540-J2B 05K23326 – TIO-540-A2B, -A2C 05K23327 – TIO-540-AJ1A 05K23335 – TIO-540-AE2A 05K23336 – TIO-540-AH1A Check the engine logbook. If the logbook states that Service Bulletin No. 554 was complied with at Lycoming, then an improved cadmium-plated crankshaft...

Supersedes Service Bulletin No. 475B January 30, 2003 MODELS AFFECTED All Lycoming direct drive piston aircraft engines (including VO-360 and IVO-360; excepting O-320-H, O-360-E, LO-360-E, TO-360-E, LTO-360-E, and TIO-541 series engines). TIME OF COMPLIANCE During overhaul, after a propeller strike, or whenever crankshaft gear removal is required. Damage to the crankshaft gear and the counterbored...

DATE: January 29, 2003 MODELS AFFECTED See Table 1 in attached bulletin. NOTE: Service Bulletin No. 556 affects any engine that has had P/N LW-11201 washers field replaced with P/N LW-11201 washers shipped 2/1/99 through 6/25/02 as spares, regardless of whether or not the engine serial number is listed in Table 1. NOTE: All P/N LW-11201 washers shipped from Lycoming as spares between 2/1/99 and 6...

DATE: December 16, 2002 Supplement No. 1 to Lycoming Service Bulletin No. 553 provides the following additions or revisions: 1. Specific numbering information will assist in the identification of affected crankshafts. Lycoming crankshaft serial numbers are in one of the following formats: a. “V5379” followed by 4 or 5 digits (1997 to present.) b. An “I” followed by 5 digits (1996 – 1997.) c. A “V”...

Supersedes Supplement No. 1 and No. 2 to Service Bulletin No. 554 DATE: November 12, 2002 Supplement No. 3 to Lycoming Service Bulletin No. 554 provides the following additions and revisions to Service Bulletin No. 554, Supplement No. 1 and Supplement No. 2 to Service Bulletin No. 554.

DATE: September 30, 2002 MODELS AFFECTED All engines listed in Table 1. All O, IO, (L)TIO or AEIO-540 engines that have had a crankshaft bolt replaced during maintenance or overhaul between November 27, 1996 and November 10, 1998. TIME OF COMPLIANCE Within the next ten (10) hours of operation or seven (7) days, whichever occurs first. Lycoming has determined that a metallurgical condition has...