What was found
APU FAULT LIGHT ON START. MULTIPLE ATTEMPTS. GROUNDED - YES. REMOVED AND REPLACED APU IGNITION UNIT REF B737-900 AMM 49-41-31/401. OPS CHECK GOOD.
- Difficulty date
- February 4, 2020
- Submitted
- February 11, 2020
- Operation
- Air carrier
- Aircraft
- N462AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36362
- Aircraft time
- 22,716 hours, 7,386 cycles
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Exciter
- Part number
- 38880585
- Part serial
- J18180167
- Condition
- Faulted
- Location
- Apu
- Part time
- 2,007 hours, 3,370 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.