| Tail Number / N-Number | N9721Y |
| Manufacturer | PIPER-HARRIS |
| Model | J3C-65 |
| Manufacturer's Serial Number | 2451 |
| 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 |
| Type of Registrant | Individual |
| Owner Name | KROG STEVEN L |
| Street | 1002 HEATHER LN |
| City | HARTFORD |
| State | WI |
| Zip Code | 53027-9045 |
| Region | Great Lakes |
| County | Washington County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2020-06-04 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-06-30 |
| Status | Valid Registration |
| Mode S Code | 53306645 |
| Mode S Code Hex | AD8DA5 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N9721Y.
| Tail Number / N-Number | N9721Y |
| Manufacturer | BEECH |
| Model | 65 |
| Manufacturer's Serial Number | LC-149 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 9 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 174 miles per hour |
| Type of Registrant | Individual |
| Owner Name | FURUYA ELIZABETH M |
| Street | 89 WADSWORTH TERRACE |
| City | NEW YORK |
| State | NY |
| Zip Code | 10001 |
| Region | Eastern |
| County | Washington County |
| Certificate Issue Date | 1963-03-26 |
| Last Status | Valid Registration |
| Cancellation Date | 1963-04-10 |
| Exported To | JAPAN |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N9721Y.
| Tail Number / N-Number | N9721Y |
| Manufacturer | CESSNA |
| Model | T210N |
| Manufacturer's Serial Number | 21064579 |
| 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 |
| County | Washington County |
| Last Status | N-Number Assigned – but has not yet been registered |