# SDR 2007UALA03645

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2007
- Submitted: September 11, 2007
- Operation: Air carrier
- Aircraft: N180UA
- Make and model: Boeing 747422
- Aircraft serial: 25224
- Aircraft time: 69,553 hours, 8,533 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA03645

## Discrepancy

EMERGENCY EXIT CEILING LIGHTS INOP, FROM DOOR 3R THRU 4R.   10-11-07   REPLACED ELECTRICAL POWER SUPPLY UNIT, AND BATTERY, CHECKED OK

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