?- ST Engineering
- Delta TechOps (Delta Air Lines
Inc)
- Collins Aerospace (Raytheon Technologies Corporation)
- General Electric Company
- Safran SA
- Rolls Royce PLC
- Honeywell International Inc.
- Lockheed Martin Corporation
- The Boeing Company
- Textron Inc.
- IAG Aero Group
- Lufthansa Technik AG (Lufthansa Group)
- AAR Corp
- StandardAero
- MTU Aero Engines North America Inc. (MTU Aero Engines)
- GKN Aerospace Services Limited