| Tail Number / N-Number | N80DK |
| Manufacturer | KLYN RICHARD J JR |
| Model | RV-4 |
| Year Built | 1994 |
| Manufacturer's Serial Number | 1685 |
| 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 | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Corporation |
| Owner Name | AUTOAIR RESEARCH INC |
| Street | 3511 SILVERSIDE RD STE 105 |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19810-4902 |
| Region | Eastern |
| County | New Castle County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1994-10-21 |
| Certificate Issue Date | 1998-08-12 |
| Last Action Date | 2021-02-08 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 52557731 |
| Mode S Code Hex | AADFD9 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N80DK.
| Tail Number / N-Number | N80DK |
| Manufacturer | KNUTSON RICHARD W |
| Model | EAA ACRO-SPORT-II |
| Manufacturer's Serial Number | 262 |
| 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 | Co-Ownership |
| Owner Name | KNUTSON RICHARD W |
| Other Names |
|
| Street | 315 PORTAGE ST |
| City | LODI |
| State | WI |
| Zip Code | 53555 |
| County | New Castle County |
| Country | US |
| Certificate Issue Date | 1981-02-27 |
| Last Action Date | 1991-01-31 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1991-04-18 |