What was found
APU FIRE SWITCH LIGHT IN SWITCH BEGAN FLICKERING EN ROUTE SHORTLY AFTER EICAS MSSG APU FIRE BEGAN APPEARING ON & OFF RAPIDLY THEN APU FIRE BELL WENT OFF. LINKED TO L8ZJ & L8Z8. APU FIRE BOTTLE REPLACED.
- Difficulty date
- October 28, 2022
- Submitted
- October 31, 2022
- Operation
- Air carrier
- Aircraft
- N573UP
- Make and model
- Boeing 74744AF
- Aircraft serial
- 35662
- Aircraft time
- 53,191 hours, 8,337 cycles
- System (JASC)
- 2612 · Fire Detection
- Part
- Fire Warning
- Condition
- Illuminated
- Location
- Apu Bay
- Stage of operation
- CR
- 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.