# SDR MTNA20170914001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 13, 2017
- Submitted: September 14, 2017
- Operation: Air carrier
- Aircraft: [N909FX](https://openairdocs.org/aircraft/N909FX), 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: 275
- Aircraft time: 27,165 hours, 31,120 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MTNA20170914001

## Discrepancy

DURING DESCENT, THE CREW DETECTED A BURNING ODOR. NO WARNING WAS TRIGGERED. THE CREW DECLARED AN EMERGENCY, AND LANDED WITHOUT INCIDENT. AN OPERATIONAL CHECK OF THE CABIN & FLIGHT COMPARTMENT AIR DISTRIBUTION, SMOKE DETECTION SYSTEM, AVIONICS WINDSHIELD HEAT, AND SIDE WINDOW HEAT WAS PERFORMED. A GVI OF THE AVIONICS RACKS, COCKPIT, CARGO AREAS, AND COWLING WAS PERFORMED, AS WELL AS A GVI FOR OIL LEAKS. OPERATIONAL CHECKS WERE GOOD, NO DEFECTS WERE NOTED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.

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