# SDR SIMA973421

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 1997
- 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: Resistor
- Part number: 7007552
- Condition: Failed
- 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/SIMA973421

## Discrepancy

ORD - FLT 4366 - SIX FLOOR EMERGENCY LIGHTS OUT.  RAI BURNED RESISTOR ON EMERGENCY POWER SUPPLY ON 29WL, OPS CHECK GOOD.  AIRCRAFT RETURNED TO SERVICE.  (M)

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