# SDR AALA20170629005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2017
- Submitted: July 4, 2017
- Operation: Air carrier
- Aircraft: [N799AN](https://openairdocs.org/aircraft/N799AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30258
- Aircraft time: 65,359 hours, 8,276 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Part serial: 95283
- Condition: Failed
- Location: Cabin
- 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/AALA20170629005

## Discrepancy

AIRCRAFT WAS IN BASE MAINTENANCE.  L3 EMERGENCY POWER SUPPLY M33406 FAILED TEST.  REMOVED AND REPLACED BATTERY PACK ASSEMBLY IAW AMM 33-51-06.  OPERATIONAL CHECK GOOD.

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