# SDR UPS08M52956

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2008
- Submitted: August 5, 2008
- Operation: Air carrier
- Aircraft: [N289UP](https://openairdocs.org/aircraft/N289UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48455
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Failed
- Location: Emergency Light
- 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/UPS08M52956

## Discrepancy

DURING PREFLIGHT, EMERGENCY LIGHT TEST FAILED. BATTERY LOW.  REMOVED AND REPLACED RECHARGEABLE BATTERY, EMERGENCY LIGHTS, POWER SUPPLY. PERFORMED OPS TEST SYSTEM OK IAW MM 33-51-01-4.

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