- Difficulty date
- November 28, 2017
- Submitted
- December 1, 2017
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35180
- Aircraft time
- 42,082 hours, 12,640 cycles
- Part
- Exciter
- Part number
- 38880587
- Part serial
- 131192
- Condition
- Failed
- Location
- Apu
- Part time
- 1,254 hours, 2,299 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.
What was found
APU FAULT LIGHT ILLUMINATED DURING APU START. APU DID NOT START. GROUNDED - YES. VERIFIED APU WILL NOT ACCELERATE PAST 12% DURING START. REMOVED & REPLACED APU IGNITION EXCITER. OPS CHECK NORMAL, REF B737-800 FIM 49-40 TASK 805 & AMM 49-41-31-000-801, 49-41-31-400-801, & 49-11-00-860-801.