3W International GmbH
BRP-Rotax GmbH & Co KG
Diamond Aircraft Industries (Austro Engine)
Gemini Diesel (Superior Aviation Group)
HIRTH ENGINES GMBH
Rotron Power Ltd.
Suter Industries AG
UAV Engines Ltd.
Advanced Innovative Engineering Ltd.
Pratt & Whitney Inc. (Part of Raytheon Technologies)
Avio Aero (GE Aviation)
Rolls-Royce Holdings PLC
PBS India (Part of PBS Aerospace)
UAV Turbines Inc. (Subsidiary of Locust USA Inc.)