SI1443S_Approved_Slick_Magnetos_and_EIS

DATE:

December 8, 2022

SUBJECT:

Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines

MODELS AFFECTED:

See Table 1

TIME OF COMPLIANCE:

Not applicable

REASON FOR REVISION:

Corrected Engine Timing and EIS P/Ns for IO-540-AB1A5 in Table 5.

REPRINT OF HARTZELL ENGINE TECHNOLOGIES’ (HET) ALERT SERVICE BULLETIN (ASB) 076

DATE:

December 8, 2022

MODELS AFFECTED:

Lycoming engine models using the HET model 200F, 201F or 202F series fuel pump.

TIME OF COMPLIANCE:

Next maintenance event not to exceed 25 hours.

REASON FOR REVISION:

Update to the new ASB 076 which obsoletes ASB 069.

Service Bulletin No. 651
Inspection for Rotator Caps on Intake Valves

September 29, 2022

MODELS AFFECTED

O-540-F1B5 and O-360-J2A engines with serial number identified in Table 1

TIME OF COMPLIANCE

Engines with less than 300 hours, inspect at next scheduled maintenance event not to exceed 50 hours of operation. Engines with 300 hours or more must be inspected within next 10 hours of operation.

SERVICE INSTRUCTION NO. 1583

DATE:

May 18, 2022

SUBJECT:

Front Expansion Plug Replacement

MODELS AFFECTED:

All Lycoming opposed series engines using a front expansion plug

TIME OF COMPLIANCE:

As necessary when front expansion plug replacement is required

Service Bulletin No. 646A
T-Bolt Clamp Inspection

April 22, 2022

MODELS AFFECTED

Lycoming Engines models TEO-540-C1A; TIO-540-R2AD, -W2A; (L)TIO-540-F2BD, -J2B, -J2BD

TIME OF COMPLIANCE

Inspection of non-conforming T-bolt clamp every 50 hours or replacement with conforming T-bolt clamp at owner’s discretion. Replacement with conforming T-bolt clamp must not exceed 12 months.

Supersedes Service Instruction No. 1533 D

April 7, 2022

MODELS AFFECTED

All Lycoming reciprocating aircraft engines using rotary-style fuel pumps

TIME OF COMPLIANCE

As Required for Replacement

REASON FOR REVISION

Added 62E28152 fuel pump to Table 1

SERVICE LETTER NO. L289

Valve Spring Part Numbers

DATE POSTED:

March 2, 2022

TO:

All Owners, Operators, and Maintenance Providers of Lycoming Aircraft Engines

REASON FOR PUBLICATION:

Lycoming has released new valve springs with new part numbers that are interchangeable with the old valve springs.

SERVICE INSTRUCTION NO. 1587

DATE:

February 3, 2022

SUBJECT:

Reprint of AVStar Service Information Letter No. AFS-SIL-03

MODELS AFFECTED:

All Lycoming engine models with an AVStar LVC-3-3A, LVC-3-3PA, LVC-5-4PA, LVC-5-5BPA, LVC-5-5PA, LHC-6-6BPA & LHC-6-6BA

TIME OF COMPLIANCE:

Whenever adjustments are made to an AVStar carburetor installed on a Lycoming engine

SERVICE INSTRUCTION NO. 1586

DATE:

December 2, 2021

SUBJECT:

Oil Cooler Bypass Valve Assembly Replacement

MODELS AFFECTED:

Lycoming TEO-540-C1A

TIME OF COMPLIANCE:

At next scheduled oil change

SERVICE LETTER NO. L288

Alternate Bolt Locking of Wastegate Solenoid Valve

DATE:

December 16, 2021

TO:

Owners and Operators of Lycoming TEO-540-C1A

REASON FOR PUBLICATION:

This Service Letter announces that the repetitive need to remove and install safety wire on the solenoid valve attaching bolt can be eliminated by usage of lock washer P/N STD-160 in combination with Loctite® 243 or equivalent.