# SDR 2004UALA00749

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2004
- Submitted: August 31, 2004
- Operation: Air carrier
- Aircraft: [N122UA](https://openairdocs.org/aircraft/N122UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 29168
- Aircraft time: 20,493 hours, 2,625 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: BPS73
- Condition: Intermittent
- Location: Emergency Light
- 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/2004UALA00749

## Discrepancy

EVACUATION PATH LIGHTING AT RIGHT SIDE OF D-ZONE COMES ON AND OFF AT INTER. REPLACED BATTERY ABOVE DOOR 3R.

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