# SDR 99ZZZX1473

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N9486F
- Make and model: Hughes 369HS
- Registry model: [Hughes 369HS](https://openairdocs.org/model/hughes-369hs) (OpenAirDocs)
- Aircraft serial: 5406035
- System (JASC): [7921 · Engine Oil Cooler](https://openairdocs.org/jasc/7921)
- Part: Valve
- Part number: 369A8326
- Condition: Broken
- Location: Engine Bay
- Part time: 8,000 hours
- Stage of operation: TO
- Nature of condition: J
- Precautionary procedure: R, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX1473

## Discrepancy

DURING TAKEOFF, ENGINE OIL PRESSURE DROPPED BELOW MINIMUMS. THROTTLE WAS CLOSED AND AIRCRAFT WAS AUTOROTATED. CHECK VALVE NIPPLE HAD SEVERED AT OIL COOLER INLET.

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