# SDR 99UAL900615

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 29, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N451UA](https://openairdocs.org/aircraft/N451UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 865
- Engine: Iae V2527A5
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Blower
- Condition: Failed
- Location: E/E Bay
- Component: Vf4957, Tech, EVT3454GOR
- Stage of operation: CR
- Nature of condition: B
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99UAL900615

## Discrepancy

A LOUD NOISE WAS HEARD UNDER FLIGHT DECK AND F/A SMELLED ELECTRICAL ODOR.  PROBLEM WAS POSIBLE AVIONICS COOLING SYSTEM.  AFTER OVERRIDING SYSTEM, SMELL DISSIPATED AND NOISE STOPPED.  ALL SYSTEMS REPORTING NORMAL.  FLIGHT CONTINUED TO DESTINATION.  *S/D*  THE AVIONICS VENTILATION BLOWER WAS FAULTED ON THIS FLIGHT.  THE BLOWER FAN (FIN 20HQ) FAILED AND WAS REPLACED DECEMBER 1 IN SAN FRANCISCO PER AMM 21-26-51 DURING C-CHECK.  THERE HAS BEEN NO FURTHER OCCURRANCES.

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