What was found
APU FAULT LIGHT CAME ON AT START UP. GROUNDED - YES. REMOVED AND REPLACED IGNITION EXCITER UNIT REF B737-800 AMM 49-41-31. OPERATIONAL TEST PASS. APU OPERATES NORMAL.
- Difficulty date
- March 24, 2023
- Submitted
- March 27, 2023
- Operation
- Air carrier
- Aircraft
- N594AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35191
- Aircraft time
- 53,228 hours, 15,757 cycles
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Exciter
- Part number
- 38880585
- Part serial
- J16200122
- Condition
- Inoperative
- Location
- Apu
- Part time
- 8,030 hours, 12,979 cycles
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.