# SDR AALA202302276987

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2023
- Submitted: February 27, 2023
- Operation: Air carrier
- Aircraft: [N721AN](https://openairdocs.org/aircraft/N721AN), registered now
- Make and model: Boeing 777323ER
- Aircraft serial: 31546
- Aircraft time: 39,029 hours, 4,491 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Battery Pack
- Part number: BPAS105
- Part serial: 2141
- Condition: Inoperative
- Location: Zone 800 - Doors
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202302276987

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: R3 DOOR EMERGENCY POWER ASSIST SYSTEM (EPAS) BATTERY INOPERATIVE. REPLACED EPAS BATTERY PACK ASSEMBLY M52115 AT DOOR R3 AND ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK PER AMM 52-12-19-000-802, AMM 52-12-19-400-801 AND AMM 52-12-19-710-802.

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