524 Textron Lycoming Service Bulletin No. This bulletin contains a detailed listing of engine and cylinder kits serial numbers affected. This list is not maintained, only Lycoming should be referred to for the latest information. 425C Textron Lycoming Service Bulletin No. Textron Lycoming SB#527C: 320/360: 4/97: SDR Lycoming Service Bulletins. 527C, whichever occurs first. NOTE: Compliance with this revision is not required if in compliance with the original issue of this service bulletin. Information here is only to be use for entertainment purposes. 527C, Recall of Piston Pin Part Number LW-14077, dated 18 Apr 1997 (or current revision). Engines with serial numbers (S/Ns) listed in Textron Lycoming Mandatory Service Bulletin (SB) No. 526 Textron Lycoming Service Bulletin No. LW-14077 MODELS AFFECTED. 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. Models and S/Ns of engines listed in Textron Lycoming Service Bulletin 527C. 1. Engines that had Textron Lycoming cylinder kits installed after December 15, 1995; or 3. Service Bulletins (published since April 1960) describe mandatory procedures that must be observed for safety reasons, and readily identified by the mandatory heading printed Overhauled engines and cylinder kits (including Superior Air Parts supplied kits that use P/N LW-14077 piston pins). REFERENCE: Attached copy of TEXTRON Lycoming Service Bulletin No. Engines with serial numbers (S/Ns) listed in Textron Lycoming Mandatory Service Bulletin (SB) No. Textron Lycoming Mandatory Service Bulletin recalls piston pin part no LW-14077 marked 17328. 527C, dated April 18, 1997; or 2. 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 … Overhauled engines and cylinder kits (including Superior Air Parts supplied kits that use P/N LW-14077 piston pins). List is applicable to O, IO, AEIO, AIO, HIO, HO, LO, TO, TIO-360 SERIES Service Instructions describe modification, processes and other information pertinent to maintenance repair and overhaul of Textron Lycoming engines. Engines that had Textron Lycoming cylinder kits installed after December 15, 1995; or 3. Textron Lycoming engines. 501B (Supersedes Service Bulletin No. Service Bulletin No. FAA AD 97-01-03. 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. Note 1: Piston pins P/N LW-14077, are not fitted to O-235 series engines. Model 114 and 114A. Service Bulletins, Letters and Instructions are available to all from authorized Lycoming … 50lA) Engineering Aspects are FAA Approved Recall of Piston Pi Part No. of Lycoming engines. and 114B SiN 14000 and Subs. 527C Textron Lycoming Service Bulletin KO.529 AirworthinessDirective 98-14-03 Amendment 39-1 0637 Effectivity Model 114. Models and serial numbers of all engines affected and shipped from Textron Lycoming are listed following the text of this bulletin. Models and S/Ns of engines listed in Textron Lycoming Service Bulletin 527C. 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