| Tail Number / N-Number | N28K |
| Manufacturer | KULP-PITTS SPECIAL |
| Model | 1966 |
| Year Built | 1968 |
| Manufacturer's Serial Number | 1 |
| 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) |
| 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 | Individual |
| Owner Name | COSS CLAYTON L |
| Street | 5005 E DAVIS FIELD RD |
| City | MUSKOGEE |
| State | OK |
| Zip Code | 74403-5303 |
| Region | Southwestern |
| County | Muskogee County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1978-07-21 |
| Certificate Issue Date | 2023-01-18 |
| Last Action Date | 2023-01-18 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 50546203 |
| Mode S Code Hex | A2CC83 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N28K.
| Tail Number / N-Number | N28K |
| Manufacturer | NEW STANDARD |
| Model | D-25 |
| Manufacturer's Serial Number | 147 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | SOLD |
| Street | MORRIS AND JOHN STREETS |
| City | NEW BRUNSWICK |
| State | NJ |
| Zip Code | 08901 |
| Region | Eastern |
| County | Muskogee County |
| Certificate Issue Date | 1941-04-09 |
| Last Status | Valid Registration |
| Cancellation Date | 1948-04-29 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N28K.
| Tail Number / N-Number | N28K |
| Manufacturer | CONVAIR |
| Model | 48 |
| Manufacturer's Serial Number | 48-33-1 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 237 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | GENERAL DYNAMICS CONVAIR |
| Street | PO BOX 1950 |
| City | SAN DIEGO |
| State | CA |
| Zip Code | 92101 |
| Region | Western-Pacific |
| County | Muskogee County |
| Last Status | Valid Registration |
| Cancellation Date | 1966-01-04 |