# SDR AALA201811079028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 2, 2018
- Submitted: November 7, 2018
- Operation: Air carrier
- Aircraft: [N772AN](https://openairdocs.org/aircraft/N772AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 29580
- Aircraft time: 79,214 hours, 10,038 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: PAC5026
- Condition: Failed
- Location: Zone 200
- 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/AALA201811079028

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: FOUND BATTERY PACK AT PASSENGER DOOR 4L FAILED TO LIGHT EMERGENCY EXITS AND ESCAPE PATH LIGHTS. REPLACED BATTERY PACK PER AMM 33-51-06.

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