SUBJECT: Repair of Oil Cooler By-Pass Valve Seat

DATE: April 26, 1986

MODELS AFFECTED:
PART I: All Avco Lycoming piston engines equipped with a P/N 75944 oil cooler bypass valve.

PART II: All Avco Lycoming direct drive engines that incorporate either a dual magneto drive accessory housing or a P/N 69510 oil pressure screen and temperature valve housing on an individual magneto drive accessory housing.

TIME OF COMPLIANCE: During engine overhaul or earlier if oil leakage past the valve seat is determined to be the cause of high oil temperature.

Supersedes Service Instruction No. 1014M

DATE: July 29, 2020

MODELS AFFECTED

All Lycoming opposed series aircraft engines.

TIME OF COMPLIANCE

When preservation oil is removed or when lubricating oil is changed or added.

REASON FOR UPDATE

Updated lubrication oils and temperature ranges.

Special Service Publication No. SSP-110-2

Certificated Engine List

DATE RELEASED:

May 2020

TITLE:

Certificated Engine List

DOCUMENT PART NUMBER:

SSP-110-2

SERVICE INSTRUCTION NO. 1009 BE

Time Between Overhaul (TBO) Schedules

DATE:

April 24, 2020

SUBJECT:

Time Between Overhaul (TBO) Schedules

MODELS AFFECTED:

Lycoming Engine Models Defined Herein

SI-1060U – PUSH ROD IDENTIFICATION

DATE:

April 22, 2020

SUBJECT:

Push Rod Identification

MODELS AFFECTED:

All Lycoming aircraft engines.

TIME OF COMPLIANCE:

Anytime push rod replacement is necessary.

REASON FOR REVISION:

Added IO-390-D to Tables 2 and 4. Revised CAUTION and NOTICE on page 1.

DATE RELEASED:

April 22, 2020

TITLE:

IO-390-D Series Engine Illustrated Parts Catalog

DOCUMENT PART NUMBER:

PC-IO-390-D

MODELS AFFECTED:

IO-390-D Series

FAA-APPROVED STARTERS AND ALTERNATORS

DATE:

April 16, 2020 

SUBJECT:

FAA-Approved Starters and Alternators

MODELS AFFECTED:

Lycoming engines as herein specified

TIME OF COMPLIANCE:

As required for replacement

REASON FOR REVISION:

Added NOTICE on page 1 regarding installation of components. Added Hartzell Engine Technologies (HET) part numbers to Table 2. Revised Table 1 to include IO-390-D Series. Starters approved for dual voltage are now only approved for 12V.

SERVICE TABLE OF LIMITS AND TORQUE VALUE RECOMMENDATIONS

DATE RELEASED:

April 13, 2020

TITLE:

Service Table of Limits and Torque Value Recommendations

DOCUMENT PART NUMBER:

SSP-1776-5

APPROVED SPARK PLUGS

DATE:

April 9, 2020

SUBJECT:

Approved Spark Plugs

MODELS AFFECTED:

All Lycoming piston aircraft engines

TIME OF COMPLIANCE:

As required for replacement

REASON FOR REVISION:

Added new engine model IO-390-D to Tables 4 and 5.

COUNTERWEIGHTS AND ROLLERS ON ENGINE MODELS

DATE:

April 9, 2020

SUBJECT:

Counterweights and Rollers on Engine Models

MODELS AFFECTED:

All Lycoming engines with counterweights

TIME OF COMPLIANCE:

As required

REASON FOR REVISION:

Added new engine models, IO-390-D Series to Table 5.