| Business | Phone |
| Western Aircraft Propeller 1510 Nw Perimeter Way, Troutdale 97060 | (503) 667-8865 |
| Advanced Aircraft Svc 1218 Nw Perimeter Way, Troutdale 97060 | (503) 465-2298 |
| Troutdale Aircraft Svc 1250 Nw Perimeter Way, Troutdale 97060 | (503) 666-3838 |
| Columbia Aerotech 1123 Nw Graham Rd, Troutdale 97060 | (503) 674-0760 |
| Emerald Aircrafters Inc 520 Nw Perimeter Way, Troutdale 97060 | (503) 667-3282 |