# SDR P9RA20040053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2004
- Submitted: December 13, 2004
- Operation: Air carrier
- Aircraft: [N720TW](https://openairdocs.org/aircraft/N720TW), registered now
- Make and model: Boeing 757231
- Aircraft serial: 30319
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Charger
- Part number: 20121
- Part serial: 1816
- Condition: Inoperative
- Location: Emergency Light
- Stage of operation: IN
- How discovered: 9
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P9RA20040053

## Discrepancy

MIAMI MAINTENANCE, DURING EMERGENCY LIGHT TEST, FOUND LEFT AFT LIGHT INOPERATIVE.  REPLACED BOTH BATTERY PACK AND CHARGER UNIT IAW MM.  BATTERY OFF PN 20131A SERIAL NUMBER OFF 70171.

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