| Tail Number / N-Number | N742MH |
| Manufacturer | ROBINSON HELICOPTER CO |
| Model | R66 |
| Manufacturer's Serial Number | 0020 |
| 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 | ROLLS-ROYC |
| Engine Model | 250-C300 |
| Engine Type | Turbo-shaft |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Type of Registrant | Corporation |
| Owner Name | MANSFIELD HELIFLIGHT INC |
| Street | 159 CATAMOUNT DR |
| City | MILTON |
| State | VT |
| Zip Code | 05468-3284 |
| Region | New England |
| County | Chittenden County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2011-02-17 |
| Certificate Issue Date | 2014-08-19 |
| Last Action Date | 2020-03-13 |
| Expiration Date | 2027-08-31 |
| Status | Valid Registration |
| Mode S Code | 52375423 |
| Mode S Code Hex | A9FB13 |