Service Bulletin No. 533 C

DATE: October 18, 2016

MODELS AFFECTED:

All Lycoming reciprocating aircraft engines


TIME OF COMPLIANCE:

BEFORE FURTHER FLIGHT


REASON FOR REVISION

Applies to all Lycoming aircraft engines (not just direct drive engines); added checklist specific for Lycoming geared engines; updated checklist which applies to all other Lycoming aircraft engines, added check for connecting rod squareness to the checklists.

Service Bulletin No. 539 A

Supersedes Service Bulletin No. 539 and Supplement No. 1

November 22, 2000

MODELS AFFECTED

Those Textron Lycoming aircraft engines shipped before December 11, 1999, that employ Crane/Lear Romec rotary fuel pump models identified below.

TIME OF COMPLIANCE

Same as that required for Crane/Lear Romec Service Bulletins No. RG9080- 73-001, No. RG9570- 73-001, and No. RG17980-73-001.

Supplement No. 1 to Service Bulletin No. 475 C

Date: September 12, 2016

REASON FOR SUPPLEMENT

Provide an alternate method of compliance to Service Bulletin No. 475C if the crankshaft gear is replaced rather than modified.

NOTICE: Incomplete review of all the information in this document can cause errors. Read the entire Supplement to make sure you have a complete understanding of the requirements.

The FAA has approved this supplement as an Alternate Method of Compliance to Airworthiness Directive 2004-10-14.

Service Bulletin No. 516 A

Date: September 9, 2016

SUBJECT

Inspection and Removal of TCM and Bendix S-20 and S-1200 Series Impulse Coupling Magnetos.


MODELS AFFECTED

All Lycoming aircraft engines with TCM and Bendix S-20 and S-1200 series impulse coupling magnetos.


TIME OF COMPLIANCE

Within the next 10 hours of engine operation.


REASON FOR REVISION

Exclusion of Bendix Model S-20 or S-1200 magnetos with a snap-ring impulse coupling assembly from the 100-hour inspection and replacement requirement.

Service Bulletin No. 518 D

August 16, 2016

MODELS AFFECTED

All Lycoming engines with thermostatic oil cooler bypass valves: Part number (P/N) 53E19600 (with thermostatic oil cooler bypass valve serial numbers less than 53788), P/N 75944, P/N LW-13230, and P/N 53E19980 (with thermostatic oil cooler bypass valve serial numbers less than 159)

TIME OF COMPLIANCE

At the next oil change, not to exceed 50 hours, then annually thereafter

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