May 27, 2009 Supplement No. 1 to Service Bulletin No. 569A is being issued to correct an inconsistency between the engine models and spare crankshafts in the “Models Affected” section on Page 1 and the start date referenced for these stated items.

DATE: March 27, 2006 MODELS AFFECTED Lycoming aircraft engines equipped with Slick Aircraft Products pressurized magnetos called out in Slick Aircraft Products Service Bulletin No. SB1-88B. TIME OF COMPLIANCE Same as required for Slick Aircraft Products Service Bulletin No. SB1-88B. This reprint is current at the time Lycoming Service Bulletin No. 568 is issued. However, when complying with this...

February 27, 2012 MODELS AFFECTED All Lycoming engines employing Bendix RS or RSA fuel injector systems TIME OF COMPLIANCE As required by subject Service Bulletin This Service Instruction includes a reprint of Bendix Service Bulletin No. RS­77, Rev. 2 which was issued to correct part numbers.

July 21, 2016 MODELS AFFECTED All O-320, IO-320, O-340, O-360, IO-360, VO-360, HIO-360, IVO-360, O- 540, IO-540, IO-720, and TIO-541 engines that do not have a Thermostatic Oil Cooler Bypass Valve Assembly installed TIME OF COMPLIANCE Optional, at owner's discretion REASON FOR REVISION Updated required parts in Table 1; clarified procedure This Service Instruction includes a procedure to install a...

June 28, 2016 MODELS AFFECTED Lycoming O, IO, AEIO-360 or O, IO, AEIO-320 series engines presently equipped with impulse coupling magnetos. TIME OF COMPLIANCE At owner’s discretion REASON FOR REVISION Added engine models to “MODELS AFFECTED”; clarified details in the text of this Service Instruction. This Service Instruction contains instructions to replace impulse coupling magnetos on affected...

June 17, 2016 MODELS AFFECTED Lycoming engine models TIO-540-S1AD, IO-540-K1G5, and IO-540-K1G5D TIME OF COMPLIANCE When necessary to replace engine mounting brackets REASON FOR REVISION Part number corrections in Table 1 This Service Instruction identifies part numbers for replacement sets of engine mounting brackets for Lycoming engine models TIO-540-S1AD, IO-540-K1G5 and IO-540-K1G5D in Piper...

June 1, 2016 MODELS AFFECTED All AEIO-320, -360, -390, -540 and -580 Aerobatic series engines TIME OF COMPLIANCE Every 300 hours of operation or any time there is evidence of oil discharge from the breather. REASON FOR REVISION Added 390 and 580 engine models and clarification. This Service Instruction identifies necessary routine maintenance to be done on the inverted oil system of aerobatic...

DATE: February 23, 2012 MODELS AFFECTED Engines that used tappet P/N 15B26064. TIME OF COMPLIANCE At next overhaul, whenever tappet replacement is necessary, or earlier at owner’s discretion. This Service Instruction is notification that tappet P/N 15B26262 is now an approved replacement for tappet P/N 15B26064. For specific engine application, refer to the latest revision of Service Instruction...

February 1, 2012 MODELS AFFECTED All 320, 360, 390, 540, 580, IO­720 Direct Drive Series Engines with Two Individual Magnetos All 235 Engines with the Accessory Housing Machined for Oil Cooler Installation TIME OF COMPLIANCE At owner’s discretion This Service Instruction identifies remote­mounted oil filter kits for installation on specified Lycoming engines.