# SDR SIMA9701521

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 1, 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: Bulb
- Part number: 167006
- 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/SIMA9701521

## Discrepancy

ORD - FLT 4389 - TWO LIGHT BULBS THE THIRD FROM THE LAST AND THE LAST EMERGENCY FLOOR LIGHT STRIP INOP.  ENTERED INTO MEL.  AIRCRAFT RETURNED TO SERVICE.  MEL WAS CLEARED BY REPLACING THE BULB.  PERFORMED EMERGENCY LIGHT CHECK WITH NO DISCREPANCIES NOTED.  AIRCRAFT WAS RETURNED TO SERVICE.  (M)

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