| Tail Number / N-Number | N12JK |
| Manufacturer | CESSNA |
| Model | 560XL |
| Year Built | 2006 |
| Manufacturer's Serial Number | 560-5618 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 13 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Engine Manufacturer | P&W CANADA |
| Engine Model | PW545B |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 4,119 pounds-force (18.3 kN) |
| Total Thrust | 8,238 pounds-force (36.6 kN) |
| Type of Registrant | LLC |
| Owner Name | JKA LLC |
| Street | 1325 HOWARD AVE # 963 |
| City | BURLINGAME |
| State | CA |
| Zip Code | 94010-4212 |
| Region | Western-Pacific |
| County | San Mateo County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2019-04-03 |
| Certificate Issue Date | 2019-04-02 |
| Last Action Date | 2022-09-14 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 50051053 |
| Mode S Code Hex | A0522B |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N12JK.
| Tail Number / N-Number | N12JK |
| Manufacturer | KNOLL JOHN |
| Model | B-80 |
| Manufacturer's Serial Number | 001 |
| Aircraft Type | Rotorcraft |
| 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 | MCCULLOCH |
| Engine Model | 4318A&E/0-100 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 72 hp (54 kW) |
| Type of Registrant | Individual |
| Owner Name | KNOLL JOHN |
| Street | 620 DALTON ST |
| City | EMMAUS |
| State | PA |
| Zip Code | 18049-3032 |
| County | San Mateo County |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1986-12-03 |
| Certificate Issue Date | 1986-11-28 |
| Last Action Date | 2008-10-21 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-09-13 |