# SDR AALA202405200687

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2024
- Submitted: May 20, 2024
- Operation: Air carrier
- Aircraft: [N119NN](https://openairdocs.org/aircraft/N119NN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6222
- Aircraft time: 31,251 hours, 10,134 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: EVT3454HM01
- Part serial: 164907495
- Condition: Odor
- Location: Extract
- Part time: 21,664 hours, 7,991 cycles
- Stage of operation: CR
- 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/AALA202405200687

## Discrepancy

AIRCRAFT WAS GROUNDED: VERY LOUD HUMMING SOUND WHICH SOON AFTER VENT EXTRACT FAULT APPEARED FOLLOWED BY AN ELECTRICAL SMOKE SMELL WHICH DISSIPATED SHORTLY AFTER. **SUPPLEMENTAL REPORT FOR AALA202405170687: REPLACED EXTRACT AVIONICS FAN PER AMM 21-26-51.** (CLOSED)

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