# SDR AALA20171121010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 2017
- Submitted: December 1, 2017
- Operation: Air carrier
- Aircraft: [N755AN](https://openairdocs.org/aircraft/N755AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30263
- Aircraft time: 66,550 hours, 8,330 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Battery
- Part number: 285W0955102
- Part serial: D01386
- Condition: No Test
- Location: R1 Door
- 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/AALA20171121010

## Discrepancy

AIRCRAFT WAS IN BASE MAINTENANCE.  R1 DOOR FAILED EMERGENCY POWER ASSIST SYSTEM CIRCUITRY CHECK.  REMOVED AND REPLACED EPAS BATTERY ASSEMBLY PER AMM 52-11-20.  OPERATIONAL CHECK GOOD.

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