# SDR 2002UALA00022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2002
- Submitted: January 22, 2002
- Operation: Air carrier
- Aircraft: [N120UA](https://openairdocs.org/aircraft/N120UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 29166
- Aircraft time: 12,417 hours, 1,498 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/2002UALA00022

## Discrepancy

BOTH FORWARD EXTERIOR OVERWING EMERGENCY LIGHT ASSEMBLY'S INOP ON LEFT HAND SIDE.  REPLACED FUSE IN POWER SUPPLY.

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