Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N51728.
| Tail Number / N-Number | N51728 |
| Manufacturer | ENSTROM |
| Model | F-28C |
| Year Built | 1978 |
| Manufacturer's Serial Number | 430 |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | HIO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 205 hp (153 kW) |
| Average Cruising Speed | 75 miles per hour |
| Type of Registrant | Partnership |
| Owner Name | SPITFIRE LEASING |
| Street | 1887 SO 1800 W |
| City | WOODS CROSS |
| State | UT |
| Zip Code | 84087 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1978-04-06 |
| Certificate Issue Date | 1990-05-01 |
| Last Action Date | 2008-09-03 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-04-01 |
| Mode S Code | 51477057 |
| Mode S Code Hex | A67E2F |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N51728.
| Tail Number / N-Number | N51728 |
| Manufacturer | RYAN AERONAUTICAL |
| Model | ST3KR |
| Manufacturer's Serial Number | 1684 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HOUSE FRANK T |
| Street | 510 KEOKUK STREET |
| City | LINCOLN |
| State | IL |
| Zip Code | 60021 |
| Region | Great Lakes |
| Certificate Issue Date | 1947-03-20 |
| Last Status | Valid Registration |
| Cancellation Date | 1947-08-04 |
| Mode S Code | 51477057 |
| Mode S Code Hex | A67E2F |