Service difficulty report · Start Valve · Boeing 777222

Difficulty date
October 25, 2012
Submitted
November 20, 2012
Operation
Air carrier
Aircraft
N776UA
Make and model
Boeing 777222
Aircraft serial
26937
Aircraft time
68,370 hours, 12,101 cycles
Engine
Pwa PW4077
Part
Start Valve
Part number
10011003
Part serial
145
Condition
Faulty
Location
Lt Engine
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ENGINE START VALVE L LEFT STARTER AIR VALVE POSITION DISAGREES WITH COMMANDED POSITION OR STARTER AIR VALVE POSITION INDICATION IS LOST. STATUS MSG01- NOT ACTIVE ENGINE SHUTDOWN MODE DEPENDENT; STARTER AIR VALVE (SAV) (L ENG) IS NOT IN COMMANDED POSITION. DB- ELECTRONIC ENGINE CONTROL (L ENG, CH A) MSG-8061561. INACTV SD MODE. REPLACED LEFT ENGINE START VALVE PER MM.