| Tail Number / N-Number | N4KN |
| Manufacturer | PIPISTREL |
| Model | TAURUS 503 |
| Year Built | 2007 |
| Manufacturer's Serial Number | 016T 503 1107 |
| Aircraft Type | Glider |
| 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 | ROTAX |
| Engine Model | 503ULDCDI |
| Engine Type | 2 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 52 hp (39 kW) |
| Type of Registrant | Individual |
| Owner Name | LOKEN HALVAR Y |
| Street | 2500 DARK HOLLOW RD |
| City | ROSELAND |
| State | VA |
| Zip Code | 22967-2763 |
| Region | Eastern |
| County | Nelson County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2008-02-22 |
| Certificate Issue Date | 2013-02-27 |
| Last Action Date | 2021-09-16 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 51124335 |
| Mode S Code Hex | A4A8DD |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4KN.
| Tail Number / N-Number | N4KN |
| Manufacturer | AB SPORTINE AVIACIJA |
| Model | GENESIS 2 |
| Year Built | 1999 |
| Manufacturer's Serial Number | 2010 |
| Aircraft Type | Glider |
| 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) |
| Engine Manufacturer | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Type of Registrant | Individual |
| Owner Name | LOKEN HALVAR Y |
| Street | 2500 DARK HOLLOW RD |
| City | ROSELAND |
| State | VA |
| Zip Code | 22967-2763 |
| County | Nelson County |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1999-12-11 |
| Certificate Issue Date | 1999-07-26 |
| Last Action Date | 2011-10-11 |
| Last Status | Valid Registration |
| Cancellation Date | 2013-01-30 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4KN.
| Tail Number / N-Number | N4KN |
| Manufacturer | LOKEN HALVAR Y |
| Model | LANCAIR 235 |
| Manufacturer's Serial Number | 198 |
| 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 | Individual |
| Owner Name | LOKEN HALVAR Y |
| Street | 4802 PENNINGTON CT |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19808 |
| County | Nelson County |
| Country | US |
| Certificate Issue Date | 1989-05-25 |
| Last Action Date | 1989-05-26 |
| Last Status | Valid Registration |
| Cancellation Date | 1991-05-08 |
| Exported To | BRAZIL |