# SDR DALA2017071205401

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 2017
- Submitted: July 13, 2017
- Operation: Air carrier
- Aircraft: N667US
- Make and model: Boeing 747451
- Aircraft serial: 24222
- Aircraft time: 115,080 hours, 13,951 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Emergency Lights
- 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/DALA2017071205401

## Discrepancy

DURING INSPECTION, FOUND EMERGENCY LIGHTS AT ROW'S 77, 78, AND 79 ARE INOPERATIVE. MAINTENANCE REPLACED THE POWER SUPPLY BATTERY IAW WDM33-51-14, OP CHECKED NORMAL.

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