# SDR AALA202608317383

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 2026
- Submitted: September 1, 2026
- Operation: Air carrier
- Aircraft: [N543UW](https://openairdocs.org/aircraft/N543UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4843
- Aircraft time: 45,604 hours, 18,799 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: VD390100
- Condition: Fault Message
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: J, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202608317383

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: DURING CRUISE FLIGHT AN ELECTRICAL ODOR IN THE AFT CABIN WAS REPORTED BY THE FLIGHT ATTENDANT AND AN AMBER FAN MESSAGE DISPLAYED ON THE COND PAGE - THE FLIGHT CREW REPORTED THAT THE ODOR DISSIPATED WITHIN 5 MINUTES AND NO OTHER ISSUES WERE NOTED - MAINTENANCE REPLACED THE LEFT RECIRCULATION FAN IAW AMM 21-21-51

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