| Tail Number / N-Number | N1977D |
| Manufacturer | COURTNEY DAVID J N |
| Model | RV-6A |
| Year Built | 1999 |
| Manufacturer's Serial Number | 25166 |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | O&VO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Kit Manufacturer | VANS AIRCRAFT INC |
| Kit Model | RV-6A |
| Type of Registrant | Individual |
| Owner Name | SANDERS STEVEN M |
| Street | 208 W PAT OHARA DR |
| City | POWELL |
| State | WY |
| Zip Code | 82435-4500 |
| Region | Northwest Mountain |
| County | Park County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1999-12-04 |
| Certificate Issue Date | 2021-05-20 |
| Last Action Date | 2021-05-20 |
| Expiration Date | 2028-05-31 |
| Status | Valid Registration |
| Mode S Code | 50302575 |
| Mode S Code Hex | A1857D |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N1977D.
| Tail Number / N-Number | N1977D |
| Manufacturer | BEECH |
| Model | D18S |
| Year Built | 1952 |
| Manufacturer's Serial Number | A-824 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 165 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | MARSHFIELD AIRWAYS INC |
| Street | NONE |
| City | MARSHFIELD |
| State | WI |
| Zip Code | 54449 |
| Region | Great Lakes |
| County | Park County |
| Certificate Issue Date | 1965-02-11 |
| Last Status | Valid Registration |
| Cancellation Date | 1969-02-24 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N1977D.
| Tail Number / N-Number | N1977D |
| Manufacturer | BEECH |
| Model | A36 |
| Manufacturer's Serial Number | E1088 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 138 miles per hour |
| County | Park County |
| Last Status | N-Number Assigned – but has not yet been registered |
| Cancellation Date | 1988-05-13 |