| Tail Number / N-Number | N421U |
| Type of Reservation | Fee paid |
| Reserving Party Name | AIRVENTURE LLC |
| Street | 834 NE 19TH AVE |
| City | FORT LAUDERDALE |
| State | FL |
| Zip Code | 33304-3081 |
| Date Reserved | 2022-05-03 |
| Expiration Date | 2023-03-03 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N421U.
| Tail Number / N-Number | N421U |
| Manufacturer | CESSNA |
| Model | 421A |
| Year Built | 1968 |
| Manufacturer's Serial Number | 421A0012 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 7 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | GTSI0-520-F-K |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 435 hp (325 kW) |
| Total Horsepower | 870 hp (649 kW) |
| Average Cruising Speed | 172 miles per hour |
| Type of Registrant | Government |
| Owner Name | WATERTOWN SCHOOL DISTRICT NO 14-4 |
| Street | PO BOX 730 |
| City | WATERTOWN |
| State | SD |
| Zip Code | 57201-0730 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1968-12-30 |
| Certificate Issue Date | 1986-08-04 |
| Last Action Date | 2010-06-15 |
| Last Status | Second Notice for Re-Registration/Renewal |
| Cancellation Date | 2012-06-20 |