All 5 companies
A–Z by legal name| Company | Registry number | Registered | Status | City |
|---|---|---|---|---|
| BLACK HILLS AERO, INC. | DB038888 | 1997-08-04 | Dissolved | Spearfish |
| MIDWEST CARPET & DUCT, INC. | DB055078 | 2010-01-15 | Dissolved | BRANDON |
| NORTHERN BLACK HILLS ULTRALIGHT & EXPERIMENTAL AIRCRAFT ASSOCIATION | NS007555 | 1983-04-07 | Dissolved | SPEARFISH |
| TAILDRAGGERS, INC. | NS010118 | 1994-06-27 | Dissolved | SPEARFISH |
| TRI-STATE AVIATION, INC. | DB038812 | 1997-07-14 | Dissolved | — |