# SDR SIMA971591

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 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: Battery
- Part number: 301151
- Condition: Discharged
- 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/SIMA971591

## Discrepancy

ORD - FLT 4088 - FORWARD LOWER EMERGENCY EXIT LIGHT INOP.  REPLACED BATTERY FOR EMERGENCY LIGHT AT SEAT 1AB (3WL)  PERFORMED OPS CHECK.  AIRCRAFT WAS RETURN TO SERVICE.  (M)

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