Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N221MK.
| Tail Number / N-Number | N221MK |
| Manufacturer | ROBINSON HELICOPTER |
| Model | R22 BETA |
| Year Built | 1989 |
| Manufacturer's Serial Number | 1221 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| 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) |
| Type of Registrant | Partnership |
| Owner Name | CHERRY FRANK CURTIS III |
| Other Names |
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| Street | 3508 14TH AVENUE SOUTH |
| City | GREAT FALLS |
| State | MT |
| Zip Code | 59405 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1989-12-06 |
| Certificate Issue Date | 1994-03-21 |
| Last Action Date | 2009-03-17 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2017-02-28 |
| Mode S Code | 50362725 |
| Mode S Code Hex | A1E5D5 |