# N851: Delackner Helicopters DH4, registration cancelled 1963-11-05

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 5, 1963
- Status when cancelled: Valid registration
- Airframe: [Delackner Helicopters DH4](https://openairdocs.org/model/delackner-helicopters-dh4) (registry code 2850202)
- Serial number: 13
- Type of aircraft: Rotorcraft
- Mode S code: ABAB0E
- Owner when cancelled: [Delackner Helicopters Inc](https://openairdocs.org/faa-owner/DELACKNER%20HELICOPTERS%20INC)
- Location: [Mt Vernon, NY](https://openairdocs.org/faa-place/NY/Mt%20Vernon)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N851
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=851
- Page: https://openairdocs.org/deregistered/N851-1963-11-05

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 Delackner Helicopters DH4: https://openairdocs.org/model/delackner-helicopters-dh4.md

## Other aircraft with N851

- [Registered now](https://openairdocs.org/aircraft/N851): Piper J3C-65, S/N 9851
- [Cancelled 1930-05-02](https://openairdocs.org/deregistered/N851-1930-05-02): Curtiss JN4D, S/N UNKNOWN. Owner: [Giffen Frank M](https://openairdocs.org/faa-owner/GIFFEN%20FRANK%20M), [San Antonio, TX](https://openairdocs.org/faa-place/TX/San%20Antonio)

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