# N4KF: Harrison Gregory SCORPION 133, registration cancelled 2013-06-07

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 7, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Harrison Gregory SCORPION 133](https://openairdocs.org/model/harrison-gregory-scorpion-133) (registry code 13025DC)
- Serial number: KF001
- Type of aircraft: Rotorcraft
- Certificate issued: April 2, 1982
- Last registry action: January 4, 1986
- Mode S code: A4A8D6
- Owner when cancelled: [Harrison Gregory F](https://openairdocs.org/faa-owner/HARRISON%20GREGORY%20F)
- Location: [Denver, CO](https://openairdocs.org/faa-place/CO/Denver)
- Owner type: Individual
- Owner's area on the map: 39.7720° N, 105.0480° W: Placed by OpenAirDocs at the center of ZIP code 80212, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4KF
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4KF
- Page: https://openairdocs.org/deregistered/N4KF-2013-06-07

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 Harrison Gregory SCORPION 133: https://openairdocs.org/model/harrison-gregory-scorpion-133.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 DEN83FTE04](https://openairdocs.org/ntsb/DEN83FTE04), Nov 22, 1982: Scorpion 133 (N4KF), Englewood, CO, destroyed, 2 fatal

## 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 19821122061129A](https://openairdocs.org/incident/19821122061129A), Nov 22, 1982: Amtrrw SCORPION* (N4KF), Englewood, CO, Destroyed, 1 fatal. Student helicopter pilot and passenger were killed in uncontrolled descent when engine quit due to fuel exhaustion.

## Other aircraft with N4KF

- [Registered now](https://openairdocs.org/aircraft/N4KF): Raytheon B300, S/N FL-354, built 2002

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