# N850: Delackner Helicopters DH4, registration cancelled 1972-01-04

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: January 4, 1972
- Status when cancelled: Valid registration
- Airframe: [Delackner Helicopters DH4](https://openairdocs.org/model/delackner-helicopters-dh4) (registry code 2850202)
- Serial number: 12
- Type of aircraft: Rotorcraft
- Certificate issued: May 29, 1957
- Mode S code: ABA757
- 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/N850
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=850
- Page: https://openairdocs.org/deregistered/N850-1972-01-04

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 N850

- [Cancelled 2013-05-14](https://openairdocs.org/deregistered/N850-2013-05-14): Luscombe 8A, S/N 5045. Registration expired, pending cancellation. Owner: [Copper H Ray](https://openairdocs.org/faa-owner/COPPER%20H%20RAY), [Hayden Lake, ID](https://openairdocs.org/faa-place/ID/Hayden%20Lake)
- [Cancelled 1935-03-15](https://openairdocs.org/deregistered/N850-1935-03-15): Standard J-1, S/N 2043. Owner: [Nickerson J H & Leland Hoburg](https://openairdocs.org/faa-owner/NICKERSON%20J%20H%20%26%20LELAND%20HOBURG), [Kansas City, KS](https://openairdocs.org/faa-place/KS/Kansas%20City)

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