Service Instruction No. 1279 D

Oil Sump Baffle Replacement

Supersedes Service Instruction No. 1279C

May 15, 2019

MODELS AFFECTED:
  • IO-540-AA1A5, -AA1B5, -AE1A5, -E1A5, -E1B5, -K1A5, -K1B5, -K1D5, -K1E5, -K1F5, -K1G5, -K1H5, -K1J5, -K1K5, -K1A5D, -K1G5D, -K1J5D, -L1C5, -M1A5, -M1C5, -M1B5D, -S1A5
  • TIO-540-A2B, -A2C, -AE2A, -AH1A, -F2BD, -J2B, -J2BD, -S1AD, -U2A
  • LTIO-540-F2BD, -J2B, -J2BD, -U2A
  • IO-580-B1A

TIME OF COMPLIANCE:

Whenever oil sump baffle replacement is necessary or at owner's discretion.

Service Instruction No. 1415 A

NEW TURBOCHARGER MOUNTING HARDWARE
DATE

March 21, 2019

MODELS AFFECTED

TO-360-C and -F series engines

TIME OF COMPLIANCE

At owner’s discretion or when part replacement is necessary.

REASON FOR REVISION

Revision A is being released to update the P/N of the strut assembly and various hardware P/N’s along with reformatting of the service instruction.

Service Bulletin No. 637

Service Bulletin No. 637
Reprint of Slick/Champion Aerospace Service Bulletin SB1-19

March 14, 2019

MODELS AFFECTED

All 4 and 6-cylinder Lycoming engines equipped with Slick 4300 or 6300 Series Impulse Coupled Magnetos.

TIME OF COMPLIANCE

Next maintenance event, or 400 hours total time in service of the magneto (whichever occurs first), then every 500 hours after the initial inspection.

Service Bulletin No. 622 A

Service Bulletin No. 622A

Reprint of Slick/Champion Aerospace Service Bulletin SB1-15A

March 13, 2019

MODELS AFFECTED

All Lycoming engines in Table 1 equipped with Slick 4200, 4300, or 4700 Series (LASAR) magnetos.

TIME OF COMPLIANCE

Next maintenance event, not to exceed 50 hours.

Service Instruction No. 1498 B

Recommended Engine Procedures for Purge of Vapor During Ground Operations
DATE:

January 7, 2019

SUBJECT:

Recommended Engine Procedures for Purge of Vapor During Ground Operations

MODELS AFFECTED:
Lycoming engines equipped with fuel injection.
TIME OF COMPLIANCE:

As necessary during aircraft operations when symptoms of fuel vaporization are encountered.

REASON FOR REVISION:

Removed model specific references.

Service Bulletin No. 634

Cylinder and Head Assembly Serviceable Life
DATE:

October 11, 2018

SUBJECT:

Cylinder and Head Assembly Serviceable Life

MODELS AFFECTED:

All Lycoming Engines with Parallel Valve Cylinder and Head Assemblies (Table 1) shipped from Lycoming Engines between 1-SEP-2013 and 30-APR-2015 (excludes O-235 series)

TIME OF COMPLIANCE:

During Cylinder and Head Assembly removal for condition or overhaul

Service Instruction No. 1571

Lockplate installation for Induction Housing on TIO-540-AJ1A and IO-540-AC1A5
DATE:

August 23, 2018

SUBJECT:

Lockplate installation for Induction Housing on TIO-540-AJ1A and IO-540-AC1A5

MODELS AFFECTED:

TIO-540-AJ1A, IO-540-AC1A5

TIME OF COMPLIANCE:

Required at next Overhaul, or at owner’s discretion.

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