# SDR SIMA952922

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 19, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N421MQ](https://openairdocs.org/aircraft/N421MQ), registered now
- Make and model: Aerosp ATR 42-300
- Registry model: [Aerosp ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (OpenAirDocs)
- Aircraft serial: 014
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Eel Power Supply
- Part number: 3011151
- Condition: Defective
- Location: Cabin
- Stage of operation: IN
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA952922

## Discrepancy

CVG - FLT 4020 - EMERGENCY BATTERY SUPPLY WILL NOT POWER EMERGENCY EXIT LIGHTS OVER EXITS AND FLOOR LIGHTING.  RAI BATTERY PACKS AT 3WL AND 18WL, S/N 2456 AND 2981.  AIRCRAFT RETURNED TO SERVICE.  (M)

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