# SDR DALA1223436303

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2012
- Submitted: April 16, 2012
- Operation: Air carrier
- Aircraft: N663US
- Make and model: Boeing 747451
- Aircraft serial: 23818
- Aircraft time: 95,663 hours, 12,450 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Fuse
- Condition: Blown
- Location: Cabin
- 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/DALA1223436303

## Discrepancy

DURING INSPECTION, FOUND EXTERIOR EMER LIGHTS OUT AT RIGHT SIDE 1ST AND 2ND POSITION.  MAINTENANCE REPLACED FUSE OF M7920 EMERGENCY LIGHT POWER SUPPLY.  OPERATIONAL CHECK OK.

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