# SDR 2008UALA00403

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2008
- Submitted: February 1, 2008
- Operation: Air carrier
- Aircraft: N199UA
- Make and model: Boeing 747422
- Aircraft serial: 28717
- Aircraft time: 42,320 hours, 5,103 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 582240
- Condition: Discharged
- Location: Cabin
- Stage of operation: CR
- 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/2008UALA00403

## Discrepancy

EMERGENCY LIGHTS 22A-B THROUGH 26A-B GOING ON AND OFF DURING FLIGHT.  REPLACED POWER SUPPLY ABOVE DOOR 2L, OP CHECK GOOD.


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