What was found
APU FAULT LIGHT ILLUMINATED DURING START. TURNED APU SWITCH OFF. ACFT GROUNDED. ACCOMPLISHED FIM TASK 49-40, TASK 801. NO WIRING FUALTS FOUND. R & R IGNITION UNIT. OPS CHECKED GOOD IAW AMM 49-41-31.
- Difficulty date
- March 7, 2014
- Submitted
- March 10, 2014
- Operation
- Air carrier
- Aircraft
- N453AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36354
- Aircraft time
- 454 hours, 151 cycles
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Exciter
- Part number
- 38880587
- Part serial
- 131313
- Condition
- Failed
- Location
- Apu
- Part time
- 166 hours, 278 cycles
- 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.