What was found
DURING APU START, A FAULT LIGHT ILLUMINATED. ACFT GROUNDED. APU SHOWS NO ROTATION FAULT. REMOVED AND REPLACED THE APU STARTER GENERATOR ASSEMBLY IAW AMM 49-41-21. OPS CHECKED GOOD, LEAK CHECKED GOOD, NO FURTHER DEFECTS NOTED.
- Difficulty date
- May 18, 2017
- Submitted
- May 19, 2017
- Operation
- Air carrier
- Aircraft
- N558AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35177
- Aircraft time
- 41,671 hours, 12,218 cycles
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Starter Gen
- Part number
- 28B5459STYLEA
- Part serial
- 128B1526
- Condition
- Failed
- Location
- Apu
- Part time
- 6,477 hours, 13,092 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.