# SDR DALA2015121607631

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2015
- Submitted: December 16, 2015
- Operation: Air carrier
- Aircraft: [N543US](https://openairdocs.org/aircraft/N543US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26490
- Aircraft time: 58,895 hours, 24,235 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Emergency Lights
- 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/DALA2015121607631

## Discrepancy

EXTERIOR EMERGENCY LIGHT AT DOOR 1 RT & EMERGENCY LIGHT AT ROW 1 THRU 3 INOPERATIVE. ISOL & T/S BATTERY PACK INOPERATIVE.  REPLACED THE BATTERY PACK AND CHECKED OK.

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