# SDR AALA20171115015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 2017
- Submitted: November 22, 2017
- Operation: Air carrier
- Aircraft: [N755AN](https://openairdocs.org/aircraft/N755AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30263
- Aircraft time: 66,548 hours, 8,328 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Battery Pack
- Part number: 285W0955102
- Part serial: D01221
- Condition: Failed
- Location: L3 Door
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20171115015

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE. PASSENGER DOOR 3L FAILED ON EPAS CIRCUITRY MODE SELECT SWITCH TEST ITEM 2B (3) PROCEDURE (F). REPLACED EMERGENCY POWER ASSIST SYSTEM BATTERY PACK ON 3L DOOR PER AMM 52-11-20. OPERATIONS CHECK GOOD.

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