DATE: August 6, 2004

MODELS AFFECTED

Any Lycoming factory new or overhauled model (L)TIO-540-U2A, -V2AD, and -W2A engines listed on ATTACHMENT I.

Any (L)TIO-540-U2A, -V2AD or -W2A engines that have had genuine Lycoming P/N LW-13212 connecting rod bearing installed during field overhaul or field maintenance between August 25, 1995 and the date of this Service Bulletin.

Supersedes Service Instruction No. 1510

April 22, 2004

MODELS AFFECTED

Lycoming AEIO-360-B1F aircraft engines installed in Grob G115E aircraft and AEIO-360-B1B aircraft engines installed in Grob G115EG.

TIME OF COMPLIANCE

At owner’s discretion.

DATE: March 23, 2004

MODELS AFFECTED

Lycoming new, rebuilt or overhauled engines employing Kelly Aerospace Power Systems starters with Lycoming P/N 31A22470, P/N 31A22472, P/N 31A22473, P/N 31B22474, P/N 31B22475, P/N 31B22476, P/N 31B22477.

TIME OF COMPLIANCE

Same as required for Kelly Aerospace Power Systems Service Bulletin No. A- 112, Rev. A.

Kelly Aerospace Power Systems Service Bulletin No. A-112, Rev. A is reprinted in its entirety as follows. Lycoming requires compliance with this Service Bulletin.

DATE: November 17, 2003

MODELS AFFECTED

See attached list for engine models and serial numbers. Spares with part numbers 56A22634-01 and 56A22634-02 that were shipped from Lycoming between June 21, 2002 and April 17, 2003 are also affected by this Service Bulletin.

TIME OF COMPLIANCE

Next oil change or next 50-hour inspection.

DATE RELEASED:

September 2003

TITLE:

AEIO-360-H1B Parts Catalog

DOCUMENT PART NUMBER:

PC-406-5

MODELS AFFECTED:

AEIO-360-H1B

DATE: August 15, 2003

Supplement No. 5 to Service Bulletin No. 554 does not supersede Supplement No. 3 to Service Bulletin No. 554 or Supplement No. 4 to Service Bulletin No. 554.

After extensive and thorough search of all engine and gear bolt records, Lycoming has determined that there are an additional 161 engines that could possibly have one of the suspect bolts. This Supplement No. 5 to Service Bulletin No. 554 is issued to ensure that these bolts are replaced.

Supersedes Service Instruction No. 1462

July 10, 2003

MODELS AFFECTED

All Lycoming Direct Drive aircraft engines equipped with a propeller governor.

TIME OF COMPLIANCE

1. Whenever sluggish propeller action is reported.

2. Whenever the engine does not hold RPM during cruise, climb or descent.

3. Whenever the engine is going into feather during landing roll out with reduced throttle setting.

Supersedes Service Instruction No. 1485

July 2, 2003

MODELS AFFECTED

All Lycoming reciprocating aircraft engines unless installed in a rotary-wing aircraft.

TIME OF COMPLIANCE

Half way to recommended TBO or at 1000 hours of operation, whichever occurs first or earlier at owner’s discretion or anytime valve sticking is suspected.

Supersedes Service Bulletin No. 555 and Supplement No. 2 to Service Bulletin No. 555

May 16, 2003

MODELS AFFECTED

New, factory rebuilt or factory overhaul engines listed in Table 1.

NOTE: Service Bulletin No. 555 also affects any engine that has had the following oil pump bodies field installed:

1. P/N 78528 shipped between 5/1/01 and 1/20/03.

2. P/N 78890 shipped between 9/17/01 and 1/20/03.

3. P/N 51A22618 shipped between 9/29/00 and 1/20/03.

DATE: May 7, 2003

MODELS AFFECTED

This Service Bulletin applies to new, rebuilt, overhauled or repaired Lycoming fuel injected engines shipped from Lycoming between January 30, 2003 and May 5, 2003 equipped with Precision Airmotive Corporation fuel injection servos, Model RSA-5 or RSA-10 identified in Precision Service Bulletin No. PRS-105. Fuel injected engines are identified by the letter “I” in the prefix.