# SDR AALA201901049016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2019
- Submitted: January 4, 2019
- Operation: Air carrier
- Aircraft: [N774AN](https://openairdocs.org/aircraft/N774AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 29581
- Aircraft time: 80,009 hours, 9,779 cycles
- System (JASC): [2560 · Emergency Equipment](https://openairdocs.org/jasc/2560)
- Part: Battery Pack
- Condition: Inoperative
- Location: R4 Door Assist
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201901049016

## Discrepancy

R4 DOOR EMERGENCY POWER ASSIST SYSTEM STATUS GREEN LIGHT WAS NOT ILLUMINATED.  MAINTENANCE REPLACED ASSIST SYSTEM BATTERY PACK AND PERFORMED A SATISFACTORY OPERATIONAL CHECK IAW AMM 52-11-20-401.

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