# N81DK: 1981 Koons Donald H CYGNET, registration cancelled 2026-06-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 20, 2026
- Status when cancelled: Sale reported, canceled
- Airframe: [Koons Donald H CYGNET](https://openairdocs.org/model/koons-donald-h-cygnet) (registry code 05655DT)
- Engine: [Revmaster 2100](https://openairdocs.org/engine/revmaster-2100) (registry code 52550)
- Serial number: 152
- Year built: 1981
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 26, 1982
- Last registry action: September 17, 2025
- Mode S code: AB0758
- Location: [Keene, NH](https://openairdocs.org/faa-place/NH/Keene)
- Owner type: Individual
- Owner's area on the map: 42.9691° N, 72.3020° W: Placed by OpenAirDocs at the center of ZIP code 03431, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N81DK
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=81DK
- Page: https://openairdocs.org/deregistered/N81DK-2026-06-20

From the FAA registry file of November 5, 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 Koons Donald H CYGNET: https://openairdocs.org/model/koons-donald-h-cygnet.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB GAA16CA274](https://openairdocs.org/ntsb/GAA16CA274), May 31, 2016: Koons Donald H Cygnet (N81DK), Zanesville, OH, substantial damage. Probable cause: The pilot's failure to maintain directional control during the landing roll, which resulted in a runway excursion, and a nose over.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20160531008479A](https://openairdocs.org/incident/20160531008479A), May 31, 2016: Cygnet SF2A (N81DK), Zanesville, OH, Substantial damage. PIC lost control on landing roll-out due to a gust of wind. The aircraft left main wheel departed the pavement on the left side of the runway onto the grass.…

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