# SDR G41A2026012200053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 2026
- Submitted: January 22, 2026
- Operation: General aviation
- Aircraft: [N317MP](https://openairdocs.org/aircraft/N317MP), registered now
- Make and model: Lear 60LEAR
- Aircraft serial: 60151
- Aircraft time: 9,945 hours, 6,849 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Faulted
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/G41A2026012200053

## Discrepancy

ON 1/20/2026, LEAR 60 N317MP CYO317 DEPARTED KAPF HEADING TO KSUS. AS THE AIRCRAFT WAS CLIMBING, THE CAPTAIN REPORTED THE AIRCRAFT DID NOT PRESSURIZE. HE SWITCHED TO MANUAL MODE AND STILL DID NOT. HE THEN ELECTED TO DIVERT INTO KRSW. LOCAL MAINTENANCE WAS CALLED TO INVESTIGATE THE ISSUE. IT WAS DECIDED TO START WITH THE PRESSURIZATION CONTROLLER. THE UNIT WAS REPLACED AND AIRCRAFT RELOCATED TO A BETTER EQUIPPED MAINTENANCE FACILITY. ON THE SHORT FLIGHT TO KBCT, THE AIRCRAFT STILL DID NOT START THE PRESSURIZATION PROCESS. THE FLIGHT WAS SHORT ENOUGH THAT IT WAS NOT NEEDED. THE AIRCRAFT IS OUT OF SERVICE UNTIL THE ISSUE IS RESOLVED AND A VALID TEST FLIGHT IS COMPLETED.

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