# SDR AALA20150922002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2015
- Submitted: September 24, 2015
- Operation: Air carrier
- Aircraft: [N858NN](https://openairdocs.org/aircraft/N858NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30904
- Aircraft time: 16,191 hours, 6,333 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71702001
- Part serial: 51939
- Condition: Discharged
- 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/AALA20150922002

## Discrepancy

EMERGENCY LIGHT SYS FAILED FUNCTIONAL TEST AT SEATS 15ABC - 21ABC IAW MCM CARD 2908, WENT OUT BEFORE COMPLETION OF TEST.  REPLACED BATTERY PACK AT M1670 IAW MM 33-51-06.  OPERATIONS CHECKED NORMAL.

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