What was found
DURING A CHECK, UPPER DECK DOOR LT EMERGENCY POWER SYSTEM BATTERY FOUND INOPERATIVE DURING TEST. CARTRIDGE ASSY WAS REPLACED. OPERATIONAL CHECK WAS SATISFACTORY.
- Difficulty date
- September 23, 2025
- Submitted
- October 6, 2025
- Operation
- Air carrier
- Aircraft
- N756CA
- Make and model
- Boeing 747412
- Aircraft serial
- 26547
- Aircraft time
- 98,521 hours, 16,008 cycles
- System (JASC)
- 5210 · Passenger/Crew Doors
- Part
- Cartridge
- Part number
- 900835AB
- Part serial
- 107619
- Condition
- Inoperative
- Location
- Zone 800
- Part time
- 98,521 hours, 16,008 cycles
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.