# N444MK: 1978 Gates Learjet 25D, registration cancelled 2011-05-10

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 10, 2011
- Status when cancelled: Valid registration
- Airframe: [Gates Learjet 25D](https://openairdocs.org/model/gates-learjet-25d) (registry code 5170514)
- Engine: [GE CJ610-8&9](https://openairdocs.org/engine/ge-cj610-8-9) (registry code 30014)
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (OpenAirDocs)
- Serial number: 252
- Year built: 1978
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-jet
- Airworthiness: Standard, transport
- Airworthiness date: December 16, 1983
- Certificate issued: May 3, 2011
- Last registry action: May 3, 2011
- Mode S code: A55A96
- Owner when cancelled: [Seasons Properties LLC](https://openairdocs.org/faa-owner/SEASONS%20PROPERTIES%20LLC)
- Location: [Kingston, OK](https://openairdocs.org/faa-place/OK/Kingston)
- Owner type: Corporation
- Owner's area on the map: 33.9379° N, 96.7441° W: Placed by OpenAirDocs at the center of ZIP code 73439, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N444MK
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=444MK
- Page: https://openairdocs.org/deregistered/N444MK-2011-05-10

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Gates Learjet 25D: https://openairdocs.org/model/gates-learjet-25d.md

## Service difficulty reports (1)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 99ZZZX3471](https://openairdocs.org/sdr/99ZZZX3471), Feb 5, 1999: LIMITER. BROKEN. AIRCRAFT LOST PRESSURIZATION DURING CLIMB THROUGH FL 200. AIRCRAFT RETURNED TO MAINTENANCE BASE FOR REPAIR. DUCT TEMP LIMITER FOR CABIN PRESSURIZATION FOUND BRO

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