| Business | Phone |
| All Star Avionics 10615 Spencer Highway, Houston 77058 | (281) 471-7827 |
| Brazos Avionics Inc 11903 Galveston Rd, Houston 77034 | (281) 922-6686 |
| Executive Instruments Inc 8402 Nelms St, Houston 77061 | (713) 640-2780 |
| Panasonic Avionics Corp 3340 Greens Rd A, Houston 77032 | (281) 449-5400 |