| Tail Number / N-Number | N921KK |
| Manufacturer | BEECH |
| Model | E-55 |
| Year Built | 1974 |
| Manufacturer's Serial Number | TE-980 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | IO 520 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 285 hp (213 kW) |
| Total Horsepower | 570 hp (425 kW) |
| Average Cruising Speed | 165 miles per hour |
| Type of Registrant | LLC |
| Owner Name | TAT NETWORKS AND AVIATION LLC |
| Street | 2335 NW DORION WAY |
| City | BEND |
| State | OR |
| Zip Code | 97703-7363 |
| Region | Northwest Mountain |
| County | Deschutes County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1974-04-21 |
| Certificate Issue Date | 2016-11-01 |
| Last Action Date | 2022-06-13 |
| Expiration Date | 2029-11-30 |
| Status | Valid Registration |
| Mode S Code | 53141314 |
| Mode S Code Hex | ACC2CC |