DATE RELEASED:

October 1980

TITLE:

GSO & IGSO-480 Parts Catalog

DOCUMENT PART NUMBER:

PC-114

MODELS AFFECTED:

GSO-480-A1A6, GSO-480-A1C6, GSO-480-A2A6, GSO-480-B1A6, GSO-480-B1B3, GSO-480-B1B6, GSO-480-B1C6, GSO-480-B1E6, GSO-480-B1F6, GSO-480-B1G6, GSO-480-B1J6, GSO-480-B2C6, GSO-480-B2D6, GSO-480-B2G6, GSO-480-B2H6, IGSO-480-A1A6, IGSO-480-A1B6, IGSO-480-A1C6, IGSO-480-A1D6, IGSO-480-A1E6, IGSO-480-A1F3, IGSO-480-A1F6, IGSO-480-A1G6

DATE RELEASED:

July 1963

TITLE:

VO & IVO-360 Parts Catalog g 

DOCUMENT PART NUMBER:

PC-107

MODELS AFFECTED:

VO-360-A1A, VO-360-A1B, VO-360-B1A

DATE RELEASED:

June 1981

TITLE:

IGO & IGSO-540 Parts Catalog

DOCUMENT PART NUMBER:

PC-116

DATE RELEASED:

January 1985

TITLE:

IO, AIO, LIO & AEIO-320 Parts Catalog

DOCUMENT PART NUMBER:

PC-303

DATE RELEASED:

July 1986

TITLE:

IO-540-L1C5 Parts Catalog

DOCUMENT PART NUMBER:

PC-615-5

DATE RELEASED:

November 1983

TITLE:

IO-540-K1H5 Parts Catalog

DOCUMENT PART NUMBER:

PC-615-2

DATE RELEASED:

March 1994

TITLE:

O-540-J & -L Parts Catalog 

DOCUMENT PART NUMBER:

PC-415-1

DATE:

May 4, 2017

MODELS AFFECTED:

Lycoming engines using a thermostatic oil cooler bypass valve

TIME OF COMPLIANCE:

At overhaul or when necessary to replace the thermostatic oil cooler bypass valve

REASON FOR REVISION: 

Clarify replacement valve part numbers for specific Lycoming engine models

DATE RELEASED: 

April 17, 2017

The FAA has approved this supplement as an Approved Alternate Method of Compliance (AMOC) to AD 2015-19-07.

DATE RELEASED:

April 5, 2017

TO:

All Owners and Operators of Lycoming Direct Drive Engines

REASON FOR SERVICE LETTER:

This Service Letter identifies extended maintenance intervals as benefits of routine exclusive use of
approved unleaded fuels identified in the latest revision of Service Instruction No. SI-1070 for Lycoming
engine models.