DATE: May 4, 2011

MODELS AFFECTED

Spare parts for the engine models identified in Table 1 shipped from Lycoming between August 18, 2010 and April 15, 2011 Lycoming engines, identified in Table 2, with P/N LW-13807 installed at time of purchase and shipped from Lycoming between August 18, 2010 and April 15, 2011.

TIME OF COMPLIANCE

Within 10 hours of engine operation or at the next maintenance event, whichever occurs first.

DATE RELEASED:

May 2011

TITLE:

O-360-A4N Parts Catalog

DOCUMENT PART NUMBER:

 PC-306-3

MODELS AFFECTED:

O-360-A4N

MODELS AFFECTED

Lycoming engines referenced  in  Table 1 in this Service Bulletin and  Fuel  Servo models referenced  in  Attachment A and Lot Numbers of fuel diaphragms and kits referenced in Attachment B in the  AVStar Mandatory Service Bulletin AFS­SB6 Revision 2.

TIME OF COMPLIANCE

Within the next 5 hours of engine operation.

Supersedes Service Instruction No. 1497

April 12, 2011

MODELS AFFECTED

Lycoming IO-360-L2A engines installed in Cessna C172R and 172S aircraft used in training operations

TIME OF COMPLIANCE

As required during aircraft operations

DATE RELEASED:

April 2011

TITLE:

O-360-C1G Parts Catalog

DOCUMENT PART NUMBER:

PC-306-4

MODELS AFFECTED:

O-360-C1G

Supersedes Service Instruction No. 1484B

March 29, 2011 

MODELS AFFECTED

All Lycoming reciprocating aircraft engines

TIME OF COMPLIANCE

When installing  a  fuel metering  device,  carburetor, fuel injector servo or “AN” fuel pump 

This Service Instruction includes the steps and torque  values for installation of a fuel metering  device, carburetor, fuel injector servo or “AN” fuel pump.

Supersedes Service Instruction No. 1442

March 28, 2011

MODELS AFFECTED

All Lycoming piston engines with dual magneto accessory housing

TIME OF COMPLIANCE

At next overhaul or evidence of a filter element collapse

This Service Instruction identifies a new spring, P/N 05S21021 that replaces spring P/N 55C21021 in the oil filter bypass valve. This replacement is to be done during overhaul or if oil filter element collapse occurs during cold starts.

Supersedes Service Instruction No. 1489B

March 9, 2011

MODELS AFFECTED

IO-360-L2A model engines installed in Cessna 172R and 172S aircraft; IO- 540-AB1A5 model engines installed in Cessna 182 aircraft; IO-540-AC1A5 model engines installed in Cessna 206 aircraft; TIO-540-AJ1A model engines installed in Cessna T206 aircraft with a 2 psi fuel flow divider spring (with detail P/N 2576532-1 or 2576556-1 marked on top of cover).

TIME OF COMPLIANCE

At owner’s discretion.

DATE RELEASED:

March 2011

TITLE:

IO-540-V Parts Catalog

DOCUMENT PART NUMBER:

PC-615-3

MODELS AFFECTED:

IO-540-V4A5, IO-540-V4A5D

Supersedes Service Instruction No. 1420

February 25, 2011 

MODELS AFFECTED

All Lycoming  reciprocating  aircraft engines with  AN  type  gear driven fuel  pump 

TIME OF COMPLIANCE

Any time the pump is installed.