# SDR DALA1109236309

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2011
- Submitted: February 9, 2011
- Operation: Air carrier
- Aircraft: N669US
- Make and model: Boeing 747451
- Aircraft serial: 24224
- Aircraft time: 3,351 hours, 426 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Discharged
- 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/DALA1109236309

## Discrepancy

DURING A MX VISIT THE EMERGENCY ESCAPE PATH LIGHT ALONG SEATS 77-79 UPPER DECK WERE BRIGHT AND THEN SHUTOFF INDEPENDENTLY OF OTHERS AFTER APPROX 5 SECONDS. MX R & R BATTERY PACK IN POWER SUPPLY, M334.  EMERGENCY LIGHTS TESTED OK IAW AMM  35-51-04/201.  ACFT IS OK FOR SERVICE.

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