Engines that had Textron Lycoming cylinder kits installed after December 15, 1995; or 3. 1. of Lycoming engines. 527C Textron Lycoming Service Bulletin KO.529 AirworthinessDirective 98-14-03 Amendment 39-1 0637 Effectivity Model 114. Refer to Textron Lycoming Mandatory Service Bulletin No. 114A. LW-14077 MODELS AFFECTED. 527C, dated April 18, 1997; or 2. Note 1: Piston pins P/N LW-14077, are not fitted to O-235 series engines. This bulletin contains a detailed listing of engine and cylinder kits serial numbers affected. 524 Textron Lycoming Service Bulletin No. 527C, dated April 18, 1997; or 2. Service Bulletins (published since April 1960) describe mandatory procedures that must be observed for safety reasons, and readily identified by the mandatory heading printed in red. 1. Textron Lycoming Service Bulletin No. 526 Textron Lycoming Service Bulletin No. 527C (or latest revision) for detail requirements. 527C, Recall of Piston Pin Part Number LW-14077, dated 18 Apr 1997 (or current revision). Textron Lycoming Mandatory Service Bulletin recalls piston pin part no LW-14077 marked 17328. Service Bulletins (published since April 1960) describe mandatory procedures that must be observed for safety reasons, and readily identified by the mandatory heading printed Last updated on 02/18/07 Lycoming is the only official source for information about their products. 527C: ASB/SB: C1B-006: March 20, 1998: X: Inspection of Main Transmission Pinion Splines; New Torque Check Requirement for Aft Pinion Nut: ASB/SB: B-244.3: April 6, 1998: X: X: X: Possible Deterioration of Certain Main Transmission Pinion … 425C Textron Lycoming Service Bulletin No. REFERENCE: Attached copy of TEXTRON Lycoming Service Bulletin No. Overhauled engines and cylinder kits (including Superior Air Parts supplied kits that use P/N LW-14077 piston pins). Service Bulletin No. Textron Lycoming Service Bulletin No. the date of Textron Lycoming Mandatory Service Bulletin No. Note 1: Piston pins P/N LW-14077, are not fitted to O-235 series engines. Engines with serial numbers (S/Ns) listed in Textron Lycoming Mandatory Service Bulletin (SB) No. Models and S/Ns of engines listed in Textron Lycoming Service Bulletin 527C. FAA AD 97-01-03. 50lA) Engineering Aspects are FAA Approved Recall of Piston Pi Part No. Service Bulletins, Letters and Instructions are available to all from authorized Lycoming … Textron Lycoming SB#527C: 320/360: 4/97: SDR Models and S/Ns of engines listed in Textron Lycoming Service Bulletin 527C. 501B (Supersedes Service Bulletin No. Textron Lycoming engines. and 114B SiN 14000 and Subs. Engines that had Textron Lycoming cylinder kits installed after December 15, 1995; or 3. List is applicable to O, IO, AEIO, AIO, HIO, HO, LO, TO, TIO-360 SERIES This list is not maintained, only Lycoming should be referred to for the latest information. NOTE: Compliance with this revision is not required if in compliance with the original issue of this service bulletin. Lycoming Service Bulletins. 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