Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N503JK.
| Tail Number / N-Number | N503JK |
| Manufacturer | KELLY JAMES T |
| Model | KELLY XP-503 |
| Year Built | 1987 |
| Manufacturer's Serial Number | DR-0308 |
| 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) |
| Engine Manufacturer | BOMBARDIER |
| Engine Model | ROTAX (ALL) |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | KELLY JAMES T |
| Street | PO BOX 52 |
| City | FRIENDSHIP |
| State | MD |
| Zip Code | 20758 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1987-07-22 |
| Certificate Issue Date | 1986-12-10 |
| Last Action Date | 1991-03-30 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2014-12-02 |
| Mode S Code | 51442747 |
| Mode S Code Hex | A645E7 |