What was found
ON APU START, FAULT LIGHT ILLUMINATED. ACFT GROUNDED. R & R THE APU IGNITION UNIT, IAW AMM 49-41-31/401, OPS CHECKS NORMAL. NO CURRENT APU FAULTS.
- Difficulty date
- April 6, 2016
- Submitted
- April 11, 2016
- Operation
- Air carrier
- Aircraft
- N440AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41705
- Aircraft time
- 9,693 hours, 3,175 cycles
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Exciter
- Part number
- 38880585
- Condition
- Failed
- Location
- Apu
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.