Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N56MU.
| Tail Number / N-Number | N56MU |
| Manufacturer | ROBINSON HELICOPTER |
| Model | R22 ALPHA |
| Year Built | 1984 |
| Manufacturer's Serial Number | 0458 |
| 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 | Corporation |
| Owner Name | FIREFLY LEASING INC |
| Street | 318 TREMONT ST |
| City | SOUTH CARVER |
| State | MA |
| Zip Code | 02366 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1984-12-14 |
| Certificate Issue Date | 2002-06-17 |
| Last Action Date | 2008-06-17 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2017-05-23 |
| Mode S Code | 51622667 |
| Mode S Code Hex | A725B7 |