# SDR UALA2009081802536

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 2009
- Submitted: August 19, 2009
- Operation: Air carrier
- Aircraft: N181UA
- Make and model: Boeing 747422
- Aircraft serial: 25278
- Aircraft time: 76,393 hours, 9,399 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 900835A
- Condition: Weak
- 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/UALA2009081802536

## Discrepancy

UPPER DECK DOOR EMERGENCY LIGHT TEST INOPERATIVE.  FOUND EMERGENCY POWER BATTERY WEAK.  REPLACED POWER BATTERY.

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