# SDR UALA2009011200116

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2009
- Submitted: January 14, 2009
- Operation: Air carrier
- Aircraft: [N120UA](https://openairdocs.org/aircraft/N120UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 29166
- Aircraft time: 40,466 hours, 4,838 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 582233
- Condition: Faulty
- Location: Cabin
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009011200116

## Discrepancy

DOOR 1R FLOOR UNDER VIDEO SYS COMPARTMENT, EMERGENCY LIGHTS CYCLES ON AND OFF UNCOMMANDED. REPLACED BATTERY PACK AT DOOR 2R AND GRD CHECKED OK.

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