What was found
APU HAS LOW BLEED AIR AT ENGINE START AND SURGING. REPLACED SURGE VALVE AND LOAD COMPRESSOR INLET TEMP SENSOR PER MM. OPERATED NORMAL ON ENGINE START.
- Difficulty date
- April 2, 2012
- Submitted
- July 6, 2012
- Operation
- Air carrier
- Aircraft
- N550UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25398
- Aircraft time
- 76,711 hours, 22,266 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 4960 · APU Controls
- Part
- Sensor
- Condition
- Faulted
- Location
- Apu Bleed
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.