| Tail Number / N-Number | N55SL |
| Manufacturer | BELL HELICOPTER TEXTRON CANADA |
| Model | 206L-4 |
| Year Built | 2007 |
| Manufacturer's Serial Number | 52347 |
| 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 | ALLISON |
| Engine Model | 250-C30P |
| Engine Type | Turbo-shaft |
| Number of Engines | 1 engine |
| Horsepower | 650 hp (485 kW) |
| Type of Registrant | Corporation |
| Owner Name | HELICOPTERS INC |
| Street | ST LOUIS DOWNTOWN AIRPORT 5000 OMEGA DR |
| City | CAHOKIA |
| State | IL |
| Zip Code | 62206 |
| Region | Great Lakes |
| County | St. Clair County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2007-01-25 |
| Certificate Issue Date | 2007-05-24 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-06-30 |
| Status | Valid Registration |
| Mode S Code | 51577255 |
| Mode S Code Hex | A6FEAD |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N55SL.
| Tail Number / N-Number | N55SL |
| Manufacturer | GATES LEARJET |
| Model | 25D |
| Manufacturer's Serial Number | 219 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 390 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SUTHERLAND LUMBER-SOUTHWEST INC |
| Street | 4000 MAIN ST |
| City | KANSAS CITY |
| State | MO |
| Zip Code | 64111 |
| County | St. Clair County |
| Country | US |
| Certificate Issue Date | 1983-04-26 |
| Last Action Date | 1998-05-20 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2000-11-20 |
| Exported To | MEXICO |