Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N12074.
| Tail Number / N-Number | N12074 |
| Manufacturer | HARRY W KNOWLTON |
| Model | KNOWLTON LSP |
| Manufacturer's Serial Number | 100A |
| Aircraft Type | Fixed wing single engine |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | GEORGE P MIERS |
| Street | ROSEDALE APTSNO 18 |
| City | NEWCASTLE |
| State | IN |
| Zip Code | 46055 |
| Region | Great Lakes |
| Certificate Issue Date | 1937-01-19 |
| Last Status | Valid Registration |
| Cancellation Date | 1938-01-15 |
| Mode S Code | 50053434 |
| Mode S Code Hex | A0571C |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N12074.
| Tail Number / N-Number | N12074 |
| Manufacturer | BENSEN GYROCOPTER |
| Model | BM8 |
| Year Built | 1964 |
| Manufacturer's Serial Number | 381 |
| 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 | MCCULLOCH |
| Engine Model | 4318A&E/0-100 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 72 hp (54 kW) |
| Average Cruising Speed | 45 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | CALLE DR VEVE NO 19 |
| City | COAMA |
| State | PR |
| Zip Code | 00640 |
| Country | RQ |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1967-07-19 |
| Last Action Date | 1990-10-17 |
| Last Status | Sale Reported – Canceled |
| Cancellation Date | 2012-06-04 |
| Mode S Code | 50053434 |
| Mode S Code Hex | A0571C |