What was found
APU FAILED DURING STARTING, AUTO SHUTDOWN (TWICE). REPLACED DELTA PRESSURE SENSOR, TOTAL PRESSURE SENSOR AND SURGE CONTROL VALVE. RAN APU AND DRY MOTORED ENGINE, OPS OK.
- Difficulty date
- December 7, 2008
- Submitted
- December 11, 2008
- Operation
- Air carrier
- Aircraft
- N768UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26919
- Aircraft time
- 54,894 hours, 10,228 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 4950 · APU Bleed Air System
- Part
- Pressure Sensor
- Condition
- Defective
- Location
- Apu
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- W
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.