# N78JK: 1979 Koskan John M VARIEZE, registration cancelled 2013-10-24

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 24, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Koskan John M VARIEZE](https://openairdocs.org/model/koskan-john-m-varieze) (registry code 05609CM)
- Engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505)
- Data sheets: [TCDS E-223](https://openairdocs.org/tcds/E-223) (OpenAirDocs)
- Serial number: 400
- Year built: 1979
- Type of aircraft: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: December 20, 1979
- Certificate issued: August 31, 1979
- Last registry action: December 5, 1982
- Mode S code: AA8EFF
- Owners when cancelled: [Koskan John M](https://openairdocs.org/faa-owner/KOSKAN%20JOHN%20M), [Koskan Verna G](https://openairdocs.org/faa-owner/KOSKAN%20VERNA%20G)
- Location: [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)
- Owner type: Co-owned
- Owner's area on the map: 37.6112° N, 97.3126° W: Placed by OpenAirDocs at the center of ZIP code 67216, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N78JK
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=78JK
- Page: https://openairdocs.org/deregistered/N78JK-2013-10-24

From the FAA registry file of November 12, 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 Koskan John M VARIEZE: https://openairdocs.org/model/koskan-john-m-varieze.md

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