Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N507Y.
| Tail Number / N-Number | N507Y |
| Manufacturer | COMMONWEALTH |
| Model | REARWIN JUNIOR 3000 |
| Manufacturer's Serial Number | 218 |
| 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 | 78 miles per hour |
| Type of Registrant | Individual |
| Owner Name | COOKE OSCAR O |
| Street | RFD #1 |
| City | BILLINGS |
| State | MT |
| Zip Code | 59102 |
| Region | Northwest Mountain |
| Certificate Issue Date | 1962-06-26 |
| Last Status | Valid Registration |
| Cancellation Date | 1977-07-07 |
| Mode S Code | 51453027 |
| Mode S Code Hex | A65617 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N507Y.
| Tail Number / N-Number | N507Y |
| Manufacturer | REARWIN AIRPLANES INC |
| Model | JUNIOR 3000 |
| Year Built | 1931 |
| Manufacturer's Serial Number | 201 |
| 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 |
| Type of Registrant | Individual |
| Owner Name | MCLEAN W B |
| Street | GENERAL DELIVERY |
| City | RED SPRINGS |
| State | NC |
| Zip Code | 28377 |
| Region | Eastern |
| Certificate Issue Date | 1935-08-15 |
| Last Status | Valid Registration |
| Cancellation Date | 1935-09-29 |
| Mode S Code | 51453027 |
| Mode S Code Hex | A65617 |