What was found
AIRCRAFT IN BASE MAINTENANCE: L4 DOOR EPAS BATTERY PACK FAILS OPERATIONAL TEST. REPLACED L4 DOOR EPAS RESERVOIR ASSEMBLY PER AMM 52-12-22-400-802. ACCOMPLISHED SATISFACTORY OPERATIONAL TEST PER AMM 52-12-20-700-802-002.
- Difficulty date
- December 12, 2022
- Submitted
- December 15, 2022
- Operation
- Air carrier
- Aircraft
- N720AN
- Make and model
- Boeing 777323ER
- Aircraft serial
- 33522
- Aircraft time
- 38,019 hours, 4,445 cycles
- System (JASC)
- 5210 · Passenger/Crew Doors
- Part
- Reservoir
- Part number
- 410045091
- Condition
- Failed Insp
- Location
- Zone 800 - Doors
- 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.