| Business | Phone |
| Advanced Aircraft Maintenance 34 Allegheny County Airport, West Mifflin 15122 | (412) 466-8790 |
| C J Systems Aviation Group 57 Allegheny County Airport, West Mifflin 15122 | (412) 466-8420 |
| Pittsburgh Air Radio Allegheny County Airport, West Mifflin 15122 | (412) 469-8400 |
| Quality Aviation Instruments 4001 Clairton Rd # 2, West Mifflin 15122 | (412) 466-7705 |