# SDR UPS07451134

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2007
- Submitted: November 12, 2007
- Operation: Air carrier
- Aircraft: N520UP
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21943
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Discharged
- Location: Bs 420
- 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/UPS07451134

## Discrepancy

INSPECTION TYPE:N/A EMERGENCY LIGHT ON MCD AT STA 420 LT DOES NOT TEST.  REMOVED AND REPLACED EMERGENCY LIGHT/BATTERY ASSY WITH REF TO MM 33-51 51-07.  OPS CHECK GOOD PER SAME.

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