# SDR DALA2023082406890

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 2023
- Submitted: August 24, 2023
- Operation: Air carrier
- Aircraft: [N827NW](https://openairdocs.org/aircraft/N827NW), registered now
- Make and model: Airbus A330-302
- Registry model: [Airbus A330-302](https://openairdocs.org/model/airbus-a330-302) (OpenAirDocs)
- Aircraft serial: 1716
- Aircraft time: 27,256 hours, 3,473 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2023082406890

## Discrepancy

SHIP 3327 DIRTY SOCK SMELL WHEN APU IS IN USE. CORRECTIVE ACTION: FOUND DIRTY SOCK SMELL WHEN APU IS IN USE. ISOLATED BOTH ENGINES NO SMELL EVIDENT. INSPECTED APU DUCTING (BLEED) FOUND EVIDENT OF OIL IN DUCTING AND COMPRESSOR SECTION. APU REMOVED + REPLACED. C/W ECS DECONTAMINATION. R/R L + R WATER EXTRACTOR. R/R L + R PACK FLOW CONTROL VALVES. PERFORMED OPS CHECK OF SYSTEM. (4436838)

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