Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4439W.
| Tail Number / N-Number | N4439W |
| Manufacturer | HIRT MARK R |
| Model | KR-1 |
| Manufacturer's Serial Number | 007 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Last Action Date | 1983-08-23 |
| Last Status | N-Number assigned, has not been registered and is pending cancellation |
| Cancellation Date | 2011-04-26 |
| Mode S Code | 51254552 |
| Mode S Code Hex | A5596A |