# SDR CA090519006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2009
- Submitted: June 16, 2009
- Operation: General aviation
- Make and model: Lear 31A
- Registry model: [Lear 31A](https://openairdocs.org/model/learjet-31a) (OpenAirDocs)
- Aircraft time: 8,526 hours
- Engine: Garrtt TFE73123B
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Uplock Switch
- Part number: 1EN18
- Condition: Unserviceable
- Location: Mlg
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA090519006

## Discrepancy

(CAN) MAIN GEAR UPLOCK SWITCH FAILED AND CAUSED THE MAIN GEAR HYD SYS TO CONTINUE OPERATING.

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