What was found
APU GEN OFF BUS LIGHT DOES NOT ILLUMINATE AFTER APU START W/APU ELECTRIC AVAILABLE BUT NOT ON BUS. LIGHT BULBS TEST OK. GROUNDED - YES. REPLACED AUX POWER BREAKER C803 REF B737-800 AMM 24-21-41.
- Difficulty date
- March 28, 2023
- Submitted
- March 31, 2023
- Operation
- Air carrier
- Aircraft
- N589AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35686
- Aircraft time
- 55,259 hours, 16,286 cycles
- System (JASC)
- 2420 · AC Generation System
- Part
- Contactor
- Part number
- 11519681
- Condition
- Faulty
- Location
- E/E, P91
- Stage of operation
- NR
- 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.