Service Letter No. L267A
(Supersedes Service Letter No. L267)

DATE RELEASED:

March 21, 2024

TO:

All Owners and Operators of Lycoming Aircraft Engines

REASON FOR REVISION:

Changed Web Address under Warranty and Owner Registration Steps. Deleted screenshots affiliated with the old web address.

DATE RELEASED:

February 2024

TITLE:

Removal and Installation Labor Allowance Guidebook for Reciprocating Aircraft Engines 

DOCUMENT PART NUMBER:

SSP-875-2 

ROCKER BOX COVER SCREWS TORQUE VALUES AND TORQUE SEQUENCE

DATE:

February 14, 2024

MODELS AFFECTED:

All Lycoming Engine Models

TIME OF COMPLIANCE:

During rocker box cover installation
This Service Instruction provides Instruction for Continued Airworthiness (ICA).

RELEASE OF NEW SILICONE ROCKER COVER GASKETS

DATE RELEASED:

February 14, 20124

TO:

All Owners and Operators of Lycoming Aircraft Engines

REASON FOR REVISION:

Added reference to Service Instruction No. 1588

INTAKE PIPE AND FLANGE INSPECTION

DATE:

January 4, 2024

HARTZELL ENGINE TECH (HET) SERVICE BULLETIN (SB) No. 203

DATE:

January 4, 2024

MODELS AFFECTED:

Turbochargers manufactured, rebuilt or overhauled by HET and HET turbocharger Overhaul Kits shipped between 10/31/2022 and 5/17/2023 with less than 50 hours time in-service for the turbocharger.

TIME OF COMPLIANCE:

If applicable, immediately perform a one-time inspection of the affected turbocharger.

SPECIAL SERVICE PUBLICATION NO. SSP-112-14

INDEX OF SERVICE BULLETINS, LETTERS, AND INSTRUCTIONS

DATE RELEASED:

December 2023

TITLE:

INDEX - SERVICE BULLETINS, LETTERS, AND INSTRUCTIONS

DOCUMENT PART NUMBER:

SSP-112-14

TO:

All Owners and Operators of Lycoming Piston Aircraft Engines

REASON FOR PUBLICATION:

Revised prefixes, letter codes, and descriptions

SERVICE LETTER NO. 114 BK

RECIPROCATING ENGINE AND ACCESSORY MAINTENANCE PUBLICATIONS 

DATE:

December 14, 2023

TO:

Owners and Operators of Lycoming Aircraft Engines

REASON FOR REVISION:

Updated the revision dates for engine model TEO-540-C1A in Table 1.
Updated the parts catalog listing for the YO-233-B2A in Table 2.
Updated revision level for SSP-112 in Table 3. Added SSP-122 to Table 3.
Removed the page number reference in the Vendor Addresses section.

Service Instruction No. 1532 N

APPROVED FUEL INJECTORS, FUEL MANIFOLD ASSEMBLIES, AND FUEL NOZZLE ASSEMBLIES FOR LYCOMING ENGINES

DATE:

December 13, 2023

SUBJECT:

Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines

MODELS AFFECTED:

Engine models in Tables 1, 2, and 3

TIME OF COMPLIANCE:

As required for replacement

REASON FOR REVISION:

Added part numbers for IO-390-C in Table 1