# SDR AALA201612309009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 29, 2016
- Submitted: January 3, 2017
- Operation: Air carrier
- Aircraft: [N156UW](https://openairdocs.org/aircraft/N156UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 5684
- Aircraft time: 11,703 hours, 4,773 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: EVT3454HC
- Part serial: 164904030
- Condition: Failed
- Part time: 11,714 hours, 4,778 cycles
- Stage of operation: DE
- 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/AALA201612309009

## Discrepancy

DURING DECENT, APPROX. 14,000FT HAD A RUMBLING VIBRATION SEEM TO BE IN THE NOSE OF THE AIRCRAFT FOLLOWED BY A RUBBERY/ ELECTRIC ODOR FOLLOWED BY VENT EXTRACT FAULT.  MAINTENANCE REPLACED THE EXTRACT FAN IAW AMM 21-26-51 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.

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