# SDR YENA20150116005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2015
- Submitted: January 19, 2015
- Operation: Air carrier
- Aircraft: [N633JB](https://openairdocs.org/aircraft/N633JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 2671
- Aircraft time: 36,641 hours, 12,893 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: EVT3454HC
- Part serial: 10300
- Condition: Vibration
- Location: Zone 100
- Part time: 36,649 hours, 12,893 cycles
- Stage of operation: AP
- How discovered: O
- Nature of condition: E, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA20150116005

## Discrepancy

HEARD A LOUD THUMP UNDER THE FLIGHT DECK FLOOR, BEHIND AND IN THE MIDDLE OF THE FLIGHT DECK. THE CREW THEN SMELLED ELECTONIC BURNING ODOR WHICH DISSAPATED AFTER APPROXIMATELY A MINUTE AFTER THE NOISE. IT ALL HAPPENED ON THE APPROACH.  PERFORMED TSM 24-00-00-810-823-A.  NO EVIDENCE OF ARCING OR CHAFING OF ELECTRICAL CIRCUITS OR MECHANICAL COMPONENTS.  ACCOMPLISHED A VISUAL INSPECTION OF THE AVIONICS SYS COMPONENTS.  NO DEFECTS NOTED.  DURING THE OPERATION, HEARD A LOUD VIBRATION COMING FROM THE AVIONICS FAN.  R & R AVIONICS FAN IAW 21-26-51. SYSTEM OPS CHECK GOOD.

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