What was found
APU START PROBLEM, PRESSURE GOES TO ZERO ON ENGINE START, APU INOP. *S/D* FAULTY IGNITION EXCITER. REPLACED IGNITION UNIT.
- Difficulty date
- September 3, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N509UA
- Make and model
- Boeing 757222
- Aircraft serial
- 24763
- Engine
- Pwa PW2037
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Exciter
- Part number
- 106170755
- Condition
- Inoperative
- Location
- Apu
- Stage of operation
- IN
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.