# SDR DALA2021060703123

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2021
- Submitted: June 7, 2021
- Operation: Air carrier
- Aircraft: [N808NW](https://openairdocs.org/aircraft/N808NW), registered now
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 0591
- Aircraft time: 75,910 hours, 9,973 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Condition: Failed
- Location: Recirculation
- Stage of operation: IN
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2021060703123

## Discrepancy

SHIP 3308 ELECTRIC ODOR ON DESCENT. CORRECTIVE ACTION: INSPECTED GLARESHIELD LIGHTS. PERFORMED GVI OF APU COMPARTMENT, APU BATTERY AND APU BCL. REPLACED FWD AND AFT RECIRC FAN FILTERS. REPLACED LEFT RECIRC FAN. FOUND CIRCUIT BREAKER TRIP EXTERNAL HORN MESSAGE ON ECAM. HORNS SMOKED THE TRIPS BEAKER. REPLACED MECHANIC CALL HORN. CANNOT DUPLICATE SMELL. (7338537)

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