Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N51765.
| Tail Number / N-Number | N51765 |
| Manufacturer | ENSTROM |
| Model | F-28C |
| Manufacturer's Serial Number | 438 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 75 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | ENSTROM HELICOPTOR CORP |
| Street | 2229 22ND ST PO BOX 277 |
| City | MENOMINEE |
| State | MI |
| Zip Code | 49858 |
| Region | Great Lakes |
| Certificate Issue Date | 1984-10-16 |
| Last Status | Valid Registration |
| Cancellation Date | 1984-10-16 |
| Exported To | SOUTH AFRICA |
| Mode S Code | 51477270 |
| Mode S Code Hex | A67EB8 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N51765.
| Tail Number / N-Number | N51765 |
| Manufacturer | MEULNERS DUANE C |
| Model | DUANES EXEC |
| Year Built | 1988 |
| Manufacturer's Serial Number | 3030 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ROTORWAY |
| Engine Model | RW152 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 150 hp (112 kW) |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | 727 WORTH LN |
| City | SCOTTS VALLEY |
| State | CA |
| Zip Code | 95066 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1989-09-15 |
| Last Action Date | 1991-08-16 |
| Last Status | Sale Reported – Canceled |
| Cancellation Date | 2013-02-25 |
| Mode S Code | 51477270 |
| Mode S Code Hex | A67EB8 |