# SDR DALA107135521

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2010
- Submitted: April 6, 2010
- Operation: Air carrier
- Aircraft: N521US
- Make and model: Boeing 757251
- Aircraft serial: 23209
- Aircraft time: 75,006 hours, 31,092 cycles
- Engine: Pwa PW2037
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Emergency Light
- 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/DALA107135521

## Discrepancy

EMERGENCY EGRESS LIGHTING FOUND INOP ON OVERNIGHT AT DOOR 2L, DOOR 3L AND ROWS 30, 31. REPLACED PWR SUPPLY AND BATTERY PACKS M732 AND M735, OPS CHECKS OK.

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