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

SERVICE INSTRUCTION NO. 1589

DATE:

December 1, 2023

SUBJECT:

Exhaust Bypass Valve Assembly Replacement

MODELS AFFECTED:

Lycoming TEO-540-C1A

TIME OF COMPLIANCE:

At replacement or upon observation of manifold pressure oscillations.

SERVICE INSTRUCTION NO. 1585A

DATE:

December 1, 2023

SUBJECT:

Oil Cooler Bypass Valve Assembly Replacement

REASON FOR REVISION:

Revised the first paragraph and replacement instructions based on the option to use either Oil Cooler Bypass Valve Assembly P/N 53E29909 or Oil Cooler Bypass Valve Assembly P/N 53E22144

MODELS AFFECTED:

Lycoming TEO-540-C1A

TIME OF COMPLIANCE:

At owner’s discretion

SERVICE LETTER NO. L293

Air Temperature Sensor P/N 60C28409

DATE POSTED:

November 9, 2023

TO:

All Owners and Operators of Lycoming TEO-540-C1A

REASON FOR PUBLICATION:

This Service Letter announces the availability of an enhanced Air Temperature Sensor to be used when replacement of existing sensor is required.

September 8, 2023

Service Bulletin No. 653

Hartzell Engine Tech (HET) Alert Service Bulletin (ASB) No. 098, SB653

MODELS AFFECTED

Lycoming engine models using the HET part number 200F or 202F series fuel pumps with less than 100 hours time-in-service for the fuel pump.

TIME OF COMPLIANCE

Next maintenance event not to exceed 25 hours.

SPECIAL SERVICE PUBLICATION NO. SSP-122 Rev. 1

Field Service Tool User Manual & Troubleshooting Guide  

DATE RELEASED:

September 2023

TITLE:

Field Service Tool User Manual & Troubleshooting Guide,  TEO-540 Series Engine Models. Field Service Tool User Manual and Troubleshooting Guide provides information in a separate publication that will allow for easier reference by the customer and allow for more convenient updates to instructions with each FST software release.

DOCUMENT PART NUMBER:

SSP-122 Rev.1

Service Instruction No. 1472

August 12, 1994

MODELS AFFECTED

All Lycoming reciprocating engines.

TIME OF COMPLIANCE

Prior to installation of engine in the aircraft

Prior to shipment from Lycoming, an engine undergoes a preservation treatment. In order to protect the cylinders and related parts preservative oil is sprayed into each cylinder. If an intake valve is open, it is possible for oil to get into the induction system of the engine. For this reason, careful deperservation of an engine is important.