| Tail Number / N-Number | N39MK |
| Manufacturer | BELL |
| Model | 206B |
| Year Built | 1980 |
| Manufacturer's Serial Number | 2984 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ALLISON |
| Engine Model | 250-C20B |
| Engine Type | Turbo-shaft |
| Number of Engines | 1 engine |
| Horsepower | 420 hp (313 kW) |
| Average Cruising Speed | 112 miles per hour |
| Type of Registrant | LLC |
| Owner Name | XTREME AVIATION LLC |
| Street | 66 E PINEY GROVE RD |
| City | FALKVILLE |
| State | AL |
| Zip Code | 35622-6956 |
| Region | Southern |
| County | Morgan County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 2013-01-30 |
| Certificate Issue Date | 2018-06-20 |
| Last Action Date | 2022-11-08 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 51100615 |
| Mode S Code Hex | A4818D |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N39MK.
| Tail Number / N-Number | N39MK |
| Manufacturer | HUGHES |
| Model | 269B |
| Manufacturer's Serial Number | 360243 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 64 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | MK HELICOPTERS INC |
| Street | SONNEBORN 4 |
| City | D58840 PLETTENBERG |
| County | Morgan County |
| Country | DE |
| Certificate Issue Date | 1997-02-18 |
| Last Action Date | 2000-03-08 |
| Last Status | Certificate of Registration has been revoked |
| Cancellation Date | 2000-06-06 |