1. Air Power Inc.
2. Boeing Company
3. Brisk Spark Plugs
4. BRP-Rotax GmbH & Co KG
5. Champion Aerospace Inc.
6. Continental Aerospace Technologies
7. Electroair Electronic Ignition Systems
8. General Electric Company
9. General Technology Corp.
10. Generation 3 Ignition
11. Hartzell Engine Technologies
12. Honeywell Aerospace
13. Janitrol Aero
14. Kelly Aerospace
15. Lycoming Engines
16. Meggitt Inc.
17. Safran Group
18. Siemens AG
19. Sky Dynamics Corp.
20. SureFly Partners
Ltd.
21. Teledyne Technologies
22. Tempest Plus
23. Transdigm Group Inc.
24. Unison
LLC
25. Woodward Inc.