# SDR 2026FA0000511

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2026
- Submitted: June 12, 2026
- Operation: General aviation
- Aircraft: [N441PC](https://openairdocs.org/aircraft/N441PC), registered now
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 668
- Aircraft time: 11,873 hours, 72,255 cycles
- Engine: Hnywl TFE73120
- Engine time: 7,986 hours, 7,578 cycles
- System (JASC): [7930 · Engine Oil Indicating System](https://openairdocs.org/jasc/7930)
- Part: Dipstick
- Part number: S9413117
- Condition: Worn
- Location: Zone 400
- Component: Engine, Hnywl, TFE7312C2B
- Component part number: 30701701
- Stage of operation: CL
- How discovered: V
- Nature of condition: K
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000511

## Discrepancy

NR 1 ENGINE OIL PRESSURE DROPPED PRECIPITOUSLY, PRECAUTIONARY SHUTDOWN PERFORMED

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