| Tail Number / N-Number | N977ST |
| Manufacturer | GREG J GUNTHER |
| Model | SPORT COPTER VORTEX |
| Year Built | 2013 |
| Manufacturer's Serial Number | 146 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ROTAX |
| Engine Model | 912ULS SERIES |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Kit Manufacturer | SPORT COPTER INC |
| Kit Model | VORTEX M912 |
| Type of Registrant | Individual |
| Owner Name | KUETHER DANIEL |
| Street | 601 OMAHA AVE |
| City | NORFOLK |
| State | NE |
| Zip Code | 68701 |
| Region | Central |
| County | Madison County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2013-08-29 |
| Certificate Issue Date | 2014-05-27 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 53317510 |
| Mode S Code Hex | AD9F48 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N977ST.
| Tail Number / N-Number | N977ST |
| Manufacturer | SILL/THOMAS |
| Model | LONG-EZ |
| Manufacturer's Serial Number | 100ST |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | THOMAS ARTHUR N JR |
| Street | 19240 BALLINGER ST |
| City | NORTHRIDGE |
| State | CA |
| Zip Code | 91324 |
| County | Madison County |
| Country | US |
| Certificate Issue Date | 1987-10-02 |
| Last Action Date | 1994-02-16 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1994-03-16 |