| Tail Number / N-Number | N204SD |
| Manufacturer | AMERICAN CHAMPION AIRCRAFT |
| Model | 8KCAB |
| Manufacturer's Serial Number | 958-2004 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | AEIO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Co-Ownership |
| Owner Name | OSTERN MARK LYNN |
| Other Names |
|
| Street | 4701 WESTRIDGE RD |
| City | RAPID CITY |
| State | SD |
| Zip Code | 57702-5606 |
| Region | Great Lakes |
| County | Pennington County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2004-05-28 |
| Certificate Issue Date | 2022-09-09 |
| Last Action Date | 2022-09-09 |
| Expiration Date | 2029-09-30 |
| Status | Valid Registration |
| Mode S Code | 50321163 |
| Mode S Code Hex | A1A273 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N204SD.
| Tail Number / N-Number | N204SD |
| Manufacturer | BELL |
| Model | UH-1B |
| Manufacturer's Serial Number | 157177 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | NONE |
| Engine Model | NONE |
| Number of Engines | 1 engine |
| Average Cruising Speed | 103 miles per hour |
| County | Pennington County |
| Last Action Date | 1993-05-20 |
| Last Status | N-Number assigned, has not been registered and is pending cancellation |
| Cancellation Date | 2011-05-18 |