Service Instruction No. 1585 A

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. L 293

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.

Service Bulletin No. 653

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

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

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.

Subscribe to Publications