# SDR UALA2009012900324

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2009
- Submitted: February 2, 2009
- Operation: Air carrier
- Aircraft: N198UA
- Make and model: Boeing 747422
- Aircraft serial: 28716
- Aircraft time: 47,407 hours, 5,680 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 20131A
- Condition: Faulty
- Location: Emergency Light
- 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/UALA2009012900324

## Discrepancy

RIGHT OVERWING EXTERIOR EMERGENCY EXIT LIGHTS INOP.  TWO LOWER AFT ASSY'S.  REPLACED POWER SUPPLY, OPS CHECKS NORMAL.

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