| Tail Number / N-Number | N21BH |
| Manufacturer | BELL |
| Model | 407 |
| Year Built | 1998 |
| Manufacturer's Serial Number | 53262 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 7 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ALLISON |
| Engine Model | 250-C47 |
| Engine Type | Turbo-shaft |
| Number of Engines | 1 engine |
| Horsepower | 600 hp (448 kW) |
| Type of Registrant | Corporation |
| Owner Name | CHEMAIR HELICOPTERS INC |
| Street | 316 E ROCK ST |
| City | JEFFERSON |
| State | WI |
| Zip Code | 53549-2159 |
| Region | Great Lakes |
| County | Jefferson County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1998-05-04 |
| Certificate Issue Date | 2019-10-08 |
| Last Action Date | 2022-05-19 |
| Expiration Date | 2029-10-31 |
| Status | Valid Registration |
| Mode S Code | 50333512 |
| Mode S Code Hex | A1B74A |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N21BH.
| Tail Number / N-Number | N21BH |
| Manufacturer | CESSNA |
| Model | 310D |
| Year Built | 1960 |
| Manufacturer's Serial Number | 39187 |
| Aircraft Type | Fixed wing multi engine |
| 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 | CONT MOTOR |
| Engine Model | I0-470 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 260 hp (194 kW) |
| Total Horsepower | 520 hp (388 kW) |
| Average Cruising Speed | 167 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | 3960 WOOD AVE |
| City | MIAMI |
| State | FL |
| Zip Code | 33133 |
| County | Jefferson County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1960-06-18 |
| Last Action Date | 1981-05-02 |
| Last Status | Sale Reported – Pending Cancellation |
| Cancellation Date | 2011-06-21 |