| Business | Phone |
| Phoenix Aviation Group Llc 839 Willow Run Expy, Ypsilanti 48197 | (734) 483-9054 |
| South East Ground Support Llc 6448 Willis Rd, Ypsilanti 48197 | (734) 483-6614 |
| Kalitta Air 818 Willow Run Airport, Ypsilanti 48198 | (734) 485-4720 |
| Sundog Electronics Inc 806 Willow Run Airport, Ypsilanti 48198 | (734) 483-6850 |