# SDR UALA2009081902544

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2009
- Submitted: August 19, 2009
- Operation: Air carrier
- Aircraft: N509UA
- Make and model: Boeing 757222
- Aircraft serial: 24763
- Aircraft time: 63,328 hours, 23,728 cycles
- Engine: Pwa PW2037
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 20131A
- Condition: Inoperative
- Location: Emergency Light
- 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/UALA2009081902544

## Discrepancy

OVERWING EMERGENCY EXIT LIGHTS L810, L779 AND L780 DO NOT ILLUMINATE.  REPLACED BATTERY PACK AT M10568, BATTERY PACK.

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