# SDR AALA201610139018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 2016
- Submitted: October 14, 2016
- Operation: Air carrier
- Aircraft: [N922US](https://openairdocs.org/aircraft/N922US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6537
- Aircraft time: 5,567 hours, 2,155 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: EVT3454HC
- Part serial: 164905730
- Condition: Malfunctioned
- Location: Zone 100
- Part time: 5,559 hours, 2,153 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201610139018

## Discrepancy

HEARD A RUMBLING SOUND AND THEN THE SMELL OF SMOKE.  TURNED THE BLOWER SWITCH TO OVRD AND NOISE AND SMOKE BOTH CLEARED.  REMOVED AND REPLACED EXTRACT/BLOWER FAN 20HQ PER AMM TASK 21-26-51-400-001A.  PERFORMED AN OPERATIONAL CHECK OF AVIONICS EQUIPMENT VENTILATION SYSTEM, PER AMM 21-26-00-710-001A, SYSTEM OP'S CHECKS GOOD.  THE AIRCRAFT WAS NOT GROUNDED.

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