# SDR UPS08M51560

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2008
- Submitted: January 30, 2008
- Operation: Air carrier
- Aircraft: [N255UP](https://openairdocs.org/aircraft/N255UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48404
- 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/UPS08M51560

## Discrepancy

ON PDC, FOUND EMERGENCY LIGHTS FAILED TEST.  REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK.  NO HELP DEFERRED PER MEL 33-50-4.  PLACARD INSTALLED.  AFTER BATTERY CHARGING COMPLETE, EMERGENCY LIGHTS OPERATIONAL CHECK GOOD PER AMM 33-50-00.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.