# SDR AALA202412042684

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2024
- Submitted: December 4, 2024
- Operation: Air carrier
- Aircraft: [N127AA](https://openairdocs.org/aircraft/N127AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6334
- Aircraft time: 32,031 hours, 10,502 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: VD390100
- Part serial: 14033045
- Condition: Defective
- Location: Zone 100
- Stage of operation: CR
- 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/AALA202412042684

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: PRIOR TO DESCENT AT FL 370 A STRONG ELECTRICAL BURNING SMELL WAS PRESENT THROUGHOUT ENTIRE CABIN AND FLIGHT DECK. SOURCES OF THE SMELL COULD NOT BE LOCATED. SMELL LASTED FOR APPROXIMATELY 15 MINUTES AND APPEARED TO DISSIPATE. MAINTENANCE FOUND THE RIGHT HAND RECIRCULATION FAN CIRCUIT BREAKER TRIPPED, INSPECTED THE FAN AND FOUND IT TO BE THE SOURCE OF THE ODOR. **SUPPLEMENTAL REPORT FOR AALA202412022684: MAINTENANCE REPLACED THE RIGHT HAND RECIRCULATION FAN AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 21-21-51. ** (CLOSED)

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