# SDR 200712211

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2007
- Submitted: December 21, 2007
- Operation: Air carrier
- Aircraft: [N657RW](https://openairdocs.org/aircraft/N657RW), registered now
- Make and model: Emb ERJ 170-100 SE
- Registry model: [EMB ERJ 170-100 SE](https://openairdocs.org/model/embraer-erj-170-100-se) (OpenAirDocs)
- Aircraft serial: 17000115
- Aircraft time: 5,791 hours, 3,683 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 340022
- Part serial: 001755
- Condition: Discharged
- Location: Cabin
- 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/200712211

## Discrepancy

DURING EMERGENCY LIGHT POWER UNIT FUNCTIONAL TEST THE EXIT LOCATER SIGN AT CENTER FUSELAGE IN AFT GALLEY CENTER CEILING PANEL DID NOT ILLUMINATE.  MAINTENANCE REMOVED AND REPLACED THE NR 3 EMERGENCY LIGHT POWER UNIT.

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