Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N51737.
| Tail Number / N-Number | N51737 |
| Manufacturer | ENSTROM |
| Model | F-28C |
| Year Built | 1978 |
| Manufacturer's Serial Number | 426 |
| 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 | Corporation |
| Owner Name | HELICOPTERS UNLIMITED INC |
| Street | 9625 EARHART RD BOX 4115 |
| City | OAKLAND |
| State | CA |
| Zip Code | 94614 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1978-05-01 |
| Certificate Issue Date | 1984-06-06 |
| Last Action Date | 1996-10-15 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-04-01 |
| Mode S Code | 51477121 |
| Mode S Code Hex | A67E51 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N51737.
| Tail Number / N-Number | N51737 |
| Manufacturer | FAIRCHILD |
| Model | M-62A |
| Manufacturer's Serial Number | T42-3426 |
| 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 | 97 miles per hour |
| Type of Registrant | Individual |
| Owner Name | R Z HOWELL |
| Street | WILLIANSON RD |
| City | ROANOKE |
| State | VA |
| Zip Code | 24005 |
| Region | Eastern |
| Certificate Issue Date | 1945-07-18 |
| Last Status | Valid Registration |
| Cancellation Date | 1948-11-02 |
| Mode S Code | 51477121 |
| Mode S Code Hex | A67E51 |