# SDR AALA201612079012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2016
- Submitted: December 8, 2016
- Operation: Air carrier
- Aircraft: [N545UW](https://openairdocs.org/aircraft/N545UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4850
- Aircraft time: 18,990 hours, 6,968 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: EVT3454HC
- Part serial: 2362
- Condition: Faulty
- Location: Zone 100
- Part time: 18,985 hours, 6,967 cycles
- Stage of operation: AP
- 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/AALA201612079012

## Discrepancy

AIRCRAFT WAS GROUNDED. (SMELL) STRONG ELECTRICAL OR RUBBER BURNING, PRECEDED BY A RUMBLING SOUND FROM BELOW THE FLIGHT DECK. HAPPENED TWICE. DECLARED EMERGENCY DURING APPROACH TO CLT WITH CABIN ODORS. MAINTENANCE FOUND AVIONICS FAN FAULTY; WHICH WAS REPLACED AND OPERATIONAL CHECKED PER AMM 21-26-51 WITH NO DEFECTS NOTED.

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