# N843: 1956 Delackner Helicopters DH4, registration cancelled 1957-05-16

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 16, 1957
- Status when cancelled: Valid registration
- Airframe: [Delackner Helicopters DH4](https://openairdocs.org/model/delackner-helicopters-dh4) (registry code 2850202)
- Serial number: DH4-5
- Year built: 1956
- Type of aircraft: Rotorcraft
- Certificate issued: September 11, 1956
- Mode S code: AB8AFD
- Owner when cancelled: [De Lackner Helicopters Inc](https://openairdocs.org/faa-owner/DE%20LACKNER%20HELICOPTERS%20INC)
- Location: [Mount Vernon, NY](https://openairdocs.org/faa-place/NY/Mount%20Vernon)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N843
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=843
- Page: https://openairdocs.org/deregistered/N843-1957-05-16

From the FAA registry file of November 3, 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 N843

- [Registered now](https://openairdocs.org/aircraft/N843): I.C.A.-Brasov IS-28B2, S/N 44
- [Cancelled 1929-06-18](https://openairdocs.org/deregistered/N843-1929-06-18): Standard J-1, S/N T-4539. Owner: [Smith R J](https://openairdocs.org/faa-owner/SMITH%20R%20J)

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