What was found
FAULT LIGHT ILLUMINATED UPON ATTEMPTING TO START APU. ACFT GROUNDED. REMOVED & REPLACED APU IGNITION UNIT IAW AMM 49-41-31. APU STARTED NORMAL IAW AMM 49-11-00. NO RECENT FAULTS.
- Difficulty date
- July 31, 2017
- Submitted
- August 3, 2017
- Operation
- Air carrier
- Aircraft
- N537AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35204
- Aircraft time
- 22,085 hours, 6,417 cycles
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Exciter
- Part number
- 38880587
- Part serial
- 111032
- Condition
- Faulted
- Location
- Apu
- Part time
- 5,161 hours, 9,967 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.