What was found
APU GENERATOR FELL OFF LINE PRIOR TO PUSHBACK. GROUNDED - YES. REMOVED AND REPLACED APU GENERATOR WITH REFERENCE B737-900 AMM 49-41-21-400-801 STEP (H) (7C). OPS CHECK GOOD AND NO LEAK FOUND WITH REF AMM 49-41-21-710-001.
- Difficulty date
- December 9, 2022
- Submitted
- December 12, 2022
- Operation
- Air carrier
- Aircraft
- N428AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36353
- Aircraft time
- 24,662 hours, 7,726 cycles
- System (JASC)
- 2420 · AC Generation System
- Part
- Generator
- Part number
- 28B5459STYLEA
- Part serial
- 87F2809
- Condition
- Inoperative
- Location
- Apu
- Part time
- 6,067 hours, 10,307 cycles
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.