| Tail Number / N-Number | N121MR |
| Type of Reservation | 2 year hold for canceled N-numbers |
| Reserving Party Name | CANCELLED/NOT ASSIGNED |
| Date Reserved | 2018-04-04 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N121MR.
| Tail Number / N-Number | N121MR |
| Manufacturer | ROBINSON HELICOPTER |
| Model | R22 ALPHA |
| Year Built | 1985 |
| Manufacturer's Serial Number | 0496 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | CASTOR AVIATION LTD |
| Street | 6540 E BEECHCRAFT RD |
| City | WASILLA |
| State | AK |
| Zip Code | 99654-9330 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1985-07-17 |
| Certificate Issue Date | 2009-07-09 |
| Last Action Date | 2014-09-10 |
| Last Status | Registration Expired - Pending Cancellation |
| Cancellation Date | 2018-04-04 |