# SDR AALA202208116668

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2022
- Submitted: August 11, 2022
- Operation: Air carrier
- Aircraft: [N903AA](https://openairdocs.org/aircraft/N903AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7566
- Aircraft time: 15,663 hours, 6,083 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: EVT3454HM01
- Part serial: 164904987
- Condition: Odor
- Location: Zone 100 - Fuse
- Part time: 23,222 hours, 10,339 cycles
- Stage of operation: AP
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202208116668

## Discrepancy

AIRCRAFT WAS GROUNDED: DURING APPROACH ELECTRICAL BURNING SMELL COMING FROM BELOW CAPTAINS FEET AREA, CREW OVERRODE THE AVIONICS BLOWER EXTRACT FANS AND ODOR WENT AWAY. MAINTENANCE REPLACED AVIONICS BLOWER EXTRACT FANS 18HQ (AALA202208110040) AND 20HQ (AALA202208116668) PER AMM 21-26-43.

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