Service difficulty report · Sensor · Boeing 777222

Difficulty date
May 18, 2008
Submitted
December 23, 2008
Operation
Air carrier
Aircraft
N773UA
Make and model
Boeing 777222
Aircraft serial
26929
Aircraft time
51,526 hours, 10,559 cycles
Engine
Pwa PW4077
Part
Sensor
Part number
11503221
Condition
Faulty
Location
Bleed Air Sys
Stage of operation
NR
How discovered
9
Nature of condition
N
Precautionary procedure
O

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

What was found

BLEED OFF ENG L LEFT ENGINE BLEED VALVE CLOSED FOR SYSTEM FAULT OR SWITCH OFF, AND THE ENGINE IS NOT SHUTDOWN. ADVISORY MSG-3610500 LATCHD ER MODE MSG-3610500 LATCHD ER MODE. REPLACED DUAL TEMP SENSOR. RAN MAT TEST CHECK GOOD, AND LEAK CHECK GOOD.