DATE: April 5, 2016 MODELS AFFECTED IO-360-M Series Engines TIME OF COMPLIANCE At the next oil change This Service Bulletin is notification to replace the oil level gage (dipstick) P/N LW-16783-18 with a new oil level gage P/N LW-14760 on affected Lycoming engine models. This replacement is mandatory and must be done at the next oil change.

February 3, 2016 MODELS AFFECTED All Lycoming engines equipped with Alternator Part Number LW-14326 or LW-14338. TIME OF COMPLIANCE 50 hours from the issue date of this Service Bulletin or the next regularly scheduled maintenance event (whichever occurs first.) This Service Bulletin is notification of required action for mandatory compliance with Hartzell Engine Technologies Service Bulletin SB...

DATE: February 2, 2016 MODELS AFFECTED Lycoming engine models IO-360-A1B6, IO-360-C1G6, TIO-360-C1A6D, IO- 540-K1G5, TIO-540-AH1A, and AEIO-580-B1A that have alternator assembly part number (P/N) 32C21703 or 32C22492 and any spare alternator assemblies P/N 32C21703 or 32C22492. TIME OF COMPLIANCE At the next regularly scheduled maintenance event but not later than 12 months after the effective...

November 2, 2015 The FAA has approved this supplement as an Approved Alternate Method of Compliance (AMOC) to AD 2015-19-07.

October 30, 2015 MODELS AFFECTED All O-360-A4A and -A4J series engines with serial number up to and including L-23659-36A, IO-360-B4A series engines with serial number up to and including L-17977-51A (not installed on Piper PA28-181 (Archer III) aircraft) and rebuilt engines shipped prior to August 17, 1977 are subject to this modification. Also, any O-360 model converted to O-360-A4A or -A4J must...

July 6, 2015 MODELS AFFECTED Lycoming Engine Models: IO-540-AC1A5, (L)TIO-540-V2AD, TIO-540- AJ1A, TIO-540-W2A, TO-360-C1A6D, TIO-360-C1A6D, TIO-541-E Series, TIGO-541-E1A, and IO-580-A1A Applies to: Engines with the serial numbers identified in Table 3 Cylinder kits identified in Table 2 shipped from the factory between March 2, 2009 and August 17, 2011 Intake valves (P/N 17A23942) sold as spares...

DATE: May 7, 2015 REASON FOR SUPPLEMENT Additional affected engines in Tables C and D. Added Table E in the attached bulletin. You must have a released copy of Service Bulletin No. SB-608 for reference as you review this supplement. If you have complied with Service Bulletin No. SB-608 and do not have any fuel pumps in Tables C or D in this Supplement No. 1 to Service Bulletin No. SB-608, no...

DATE: April 9, 2015 MODELS AFFECTED O-320-H2AD, O, LO, TO, LTO-360-E1A6D. TIME OF COMPLIANCE Refer to Table 1 in the attached bulletin. This Service Bulletin is in response to a single field report of one excessively worn rocker arm found during an investigation of reported engine roughness. Results of material analysis at Lycoming Engines show that the rocker arm had not been case hardened, as...

October 10, 2014 Supplement No. 1 provides FAA approval of Service Bulletin 530B as an Alternate Method of Compliance (AMOC) with AD #98-02-08 (see attached).