# SDR 0004515525

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2000
- Submitted: December 15, 2000
- Operation: Air carrier
- Aircraft: [N525US](https://openairdocs.org/aircraft/N525US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 23619
- Aircraft time: 46,387 hours, 19,705 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 20131A
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0004515525

## Discrepancy

EMERGENCY LIGHT BATTERY PACK M737 FAILED DEEP CYCLE BATTERY TEST.    MAINTENANCE REPLACED THE BATTERY PACK. OPERAITONAL CHECK NORMAL.

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