| Business | Phone |
| John's Kart Shop 7049 W Archer Ave, Chicago 60638 | (773) 586-5600 |
| Midway Aircraft Brokers 5240 W 63rd St, Chicago 60638 | (773) 581-0200 |
| Navaerp 9 W Hubbard St, Chicago 60610 | (312) 822-0477 |
| International Aircraft 745 W Gordon Ter, Chicago 60613 | (773) 529-1600 |