# SDR YENA2020072700403

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2020
- Submitted: July 28, 2020
- Operation: Air carrier
- Aircraft: [N793JB](https://openairdocs.org/aircraft/N793JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 4647
- Aircraft time: 37,589 hours, 12,972 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Blower
- Part number: EVT3454HC
- Part serial: 4110
- Condition: Failed
- Location: Cockpit
- Part time: 76,651 hours, 27,908 cycles
- 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/YENA2020072700403

## Discrepancy

FLT 739,  EMERGENCY DECLARED. LOUD NOISE AND VIBRATION UNDER OUR FEET ON BOTH SIDES WHEN SMOKE AND FUMES INITIATED BLOWER MOTOT, SWITCHED OFF, VIBRATION STOPPED AND FUMES DISSIPATED AFTER A FEW MINUTES . AT TOP OF DESCENT FUMES CAME BACK OXYGEN MASKS DONNED AGAIN.

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