Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N37550.
| Tail Number / N-Number | N37550 |
| Manufacturer | OTTMER JAMES M |
| Model | BENSEN B8M |
| Year Built | 1980 |
| Manufacturer's Serial Number | 9116 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | VOLKSWAGEN |
| Engine Model | CONVERSION |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 36 hp (27 kW) |
| Type of Registrant | Individual |
| Owner Name | COBB MICHAEL P |
| Street | P O BOX 70182 |
| City | HOUSTON |
| State | TX |
| Zip Code | 77270 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1981-08-20 |
| Certificate Issue Date | 1994-02-01 |
| Last Action Date | 2009-06-16 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2014-12-02 |
| Mode S Code | 51044576 |
| Mode S Code Hex | A4497E |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N37550.
| Tail Number / N-Number | N37550 |
| Manufacturer | DOUGLAS |
| Model | DC-6B |
| Manufacturer's Serial Number | 43260 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 96 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Number of Engines | 4 engines |
| Average Cruising Speed | 216 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | UNITED AIRLINES INC |
| Certificate Issue Date | 1951-04-23 |
| Last Status | Valid Registration |
| Cancellation Date | 1951-10-17 |
| Mode S Code | 51044576 |
| Mode S Code Hex | A4497E |