# SDR UPS02439076

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2002
- Submitted: August 16, 2002
- Operation: Air carrier
- Aircraft: N521UP
- Make and model: Boeing 747-200
- Registry model: [Boeing 747-200](https://openairdocs.org/model/boeing-747-200) (OpenAirDocs)
- Aircraft serial: 21944
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Odor
- Condition: Detected
- Location: Cockpit
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: G
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS02439076

## Discrepancy

INSPECTION TYPE:N/A OIL SMELL AND HAZE IN COCKPIT AT TOP OF DESCENT WHEN THROTTLES RETARDED.  VERIFIED SOURCE OF OIL SMELL FROM NR 3 ENGINE PNEUMATICS.  LOCKED OUT NR 3 ENGINE PYLON VALVE TO ISOLATE PNEUMATICS FROM AIRFRAME.

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