lycoming service bulletins
lycoming service instruction 1294
lycoming service instruction 1431
lycoming service instruction 1325alycoming service bulletin no 298
lycoming service publications
lycoming service bulletin 527
lycoming sb301

Compliance with Hartzell Engine Technologies, LLC Service Bulletin No. rebuilt, or overhauled Lycoming engine models in Table A manufactured between Engines that previously complied with Service Bulletin No. Crankshaft Replacement in Lycoming TIO and LTIO-540 Engines Rated at 300 Horsepower and Supersedes Service Bulletin No. 574 July 20, 2007 MODELS AFFECTED Any Lycoming engine model listed in Table 1 that was manufactured, rebuilt, 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 14 Mar 2019 Service Bulletin No. 637 Reprint of Slick/Champion Aerospace Service Bulletin SB1-19 March 14, 2019 MODELS AFFECTED All 4 and