| Tail Number / N-Number | N4451 |
| Manufacturer | LAMMERS ARVILLE J |
| Model | CAVALON |
| Year Built | 2015 |
| Manufacturer's Serial Number | V00192 |
| Aircraft Type | Gyroplane |
| 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) |
| Engine Manufacturer | ROTAX |
| Engine Model | 914ULS |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 115 hp (86 kW) |
| Kit Manufacturer | AUTOGYRO GMBH |
| Kit Model | CAVALON |
| Type of Registrant | Individual |
| Owner Name | LAMMERS ARVILLE J |
| Street | PO BOX 112 |
| City | SHAWMUT |
| State | MT |
| Zip Code | 59078-0112 |
| Region | Northwest Mountain |
| County | Wheatland County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2015-08-12 |
| Certificate Issue Date | 2015-06-23 |
| Last Action Date | 2021-01-20 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 51257653 |
| Mode S Code Hex | A55FAB |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4451.
| Tail Number / N-Number | N4451 |
| Manufacturer | GRUMMAN |
| Model | G-44A |
| Year Built | 1967 |
| Manufacturer's Serial Number | 33 |
| Aircraft Type | Fixed wing multi engine |
| Category | Amphibian |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 131 miles per hour |
| Type of Registrant | Individual |
| Owner Name | JOHNSTON JOHN DH |
| Street | 507 DAVIES RD |
| City | LAKE STEVENS |
| State | WA |
| Zip Code | 98258 |
| Region | Northwest Mountain |
| County | Wheatland County |
| Certificate Issue Date | 1978-03-17 |
| Last Status | Valid Registration |
| Cancellation Date | 1982-08-30 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4451.
| Tail Number / N-Number | N4451 |
| Manufacturer | EAGLEROCK |
| Model | LONG WING EAGLEROCK |
| Manufacturer's Serial Number | 461 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 63 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MELVIN LEO PAUL |
| Street | 316 W ALGER AVE |
| City | SHERIDAN |
| State | WY |
| Zip Code | 82070 |
| Region | Northwest Mountain |
| County | Wheatland County |
| Last Status | Valid Registration |
| Cancellation Date | 1933-01-06 |