# SDR AALA20150214004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 14, 2015
- Submitted: February 19, 2015
- Operation: Air carrier
- Aircraft: [N979TW](https://openairdocs.org/aircraft/N979TW), registered now
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53629
- Aircraft time: 43,728 hours, 21,419 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 8039001
- Condition: Crew Error
- Location: Emergency Lights
- Stage of operation: NR
- How discovered: 9
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20150214004

## Discrepancy

DURING PREFLIGHT CREW NOTED EMERGENCY LIGHTS INOPERATIVE.  BATTERY SWITCH WAS LEFT ON.  BATTERY PACKS WERE DRAINED.  REPLACED BATTERY PACK IAW AMM 33-53-00. SYSTEM CHECKED NORMAL.

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