| Tail Number / N-Number | N991MC |
| Manufacturer | HUGHES |
| Model | 369D |
| Year Built | 1978 |
| Manufacturer's Serial Number | 780314D |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ALLISON |
| Engine Model | 250-C20 SER |
| Engine Type | Turbo-prop |
| Number of Engines | 1 engine |
| Horsepower | 420 hp (313 kW) |
| Average Cruising Speed | 112 miles per hour |
| Type of Registrant | Government |
| Owner Name | CHARLESTON COUNTY MOSQUITO CONTROL |
| Street | 4370 AZALEA DR |
| City | NORTH CHARLESTON |
| State | SC |
| Zip Code | 29405-7409 |
| Region | Southern |
| County | Charleston County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2001-07-03 |
| Certificate Issue Date | 2017-04-10 |
| Last Action Date | 2022-12-07 |
| Expiration Date | 2030-04-30 |
| Status | Valid Registration |
| Mode S Code | 53353560 |
| Mode S Code Hex | ADD770 |