# SDR AALA2018100539012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 2, 2018
- Submitted: October 9, 2018
- Operation: Air carrier
- Aircraft: [N124AA](https://openairdocs.org/aircraft/N124AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6271
- Aircraft time: 13,990 hours, 4,091 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: EVT3454HM01
- Part serial: 5199
- Condition: Failed
- Location: Vent Blower
- Stage of operation: NR
- How discovered: O
- Nature of condition: E, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2018100539012

## Discrepancy

VENTILATION BLOWER FAN VERY LOUD. THEN AT 3.5 HRS INTO FLIGHT, SOUNDS CHANGED FOLLOWED BY METALLIC ODOR, SELECTED BOTH FANS TO OVERRIDE. NO FAULTS WERE INDICATED.   REPLACED AVIONICS VENT BLOWER FAN IAW AMM 21-26-51. OPS CHECKED GOOD.

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