| Tail Number / N-Number | N6991H |
| Manufacturer | CESSNA |
| Model | 172M |
| Year Built | 1975 |
| Manufacturer's Serial Number | 17265683 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 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) |
| Average Cruising Speed | 108 miles per hour |
| Type of Registrant | Government |
| Owner Name | STATE OF WISCONSIN |
| Other Names |
|
| Street | 3400 MILLER ST |
| City | MADISON |
| State | WI |
| Zip Code | 53704-2528 |
| Region | Great Lakes |
| County | Dane County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1975-08-09 |
| Certificate Issue Date | 1982-10-29 |
| Last Action Date | 2021-03-19 |
| Expiration Date | 2028-08-31 |
| Status | Valid Registration |
| Mode S Code | 52247250 |
| Mode S Code Hex | A94EA8 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N6991H.
| Tail Number / N-Number | N6991H |
| Manufacturer | PIPER |
| Model | J3C-65 |
| Year Built | 1946 |
| Manufacturer's Serial Number | 20236 |
| 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 | 67 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MID-ISLAND AIR SERVICE |
| Street | DEER PARK |
| City | LONG ISLAND |
| State | NY |
| Zip Code | 11729 |
| Region | Eastern |
| County | Dane County |
| Certificate Issue Date | 1946-10-07 |
| Last Status | Valid Registration |
| Cancellation Date | 1947-12-03 |