# SDR CALA2013100191626

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 2013
- Submitted: October 3, 2013
- Operation: Air carrier
- Aircraft: [N107UA](https://openairdocs.org/aircraft/N107UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 26900
- Aircraft time: 61,775 hours, 7,260 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Fuse
- Condition: Blown
- Location: Power Supply
- 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/CALA2013100191626

## Discrepancy

TWO OF FOUR EMERGENCY EXIT LIGHTS INOPERATIVE FOR RT SIDE OVER WING SLIDE.  CHANGED POWER SUPPLY, REPLACED FUSES IN THE OLD POWER SUPPLY & REINSTALLED OLD POWER SUPPLY.  OPERATIONS CHECKED RT EXTERIOR EGRESS EMERGENCY EXIT LIGHTS & ALL FOUR LIGHT ASSEMBLY OPERATIONS CHECKED GOOD.

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