What was found
REPLACED APU FLOW SENSING MODULE REF DF676 APU AUTO SHUTDOWN. REPLACED FLOW SENSING MODULE, NO HELP ACC. APU DEEP BITE TEST FAULTS SHOW DELTA P, FUEL CONTROL UNIT, DE-OILER SOLENOID, HOT SENSOR AND P2 SENSOR
- Difficulty date
- March 22, 2013
- Submitted
- April 25, 2013
- Operation
- Air carrier
- Aircraft
- N552UA
- Make and model
- Boeing 757222
- Aircraft serial
- 26641
- Aircraft time
- 79,818 hours, 23,050 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 4930 · APU Engine Fuel and Control
- Part
- Fcu
- Condition
- Faulty
- Location
- Apu
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.