Key Players: (this may not be a complete list and extra companies can be added upon request)

Honeywell International Inc.
United Technologies Corporation (Collins Aerospace)
Safran Group
General Electric Company
MTU Aero Engines AG
BendixKing
Pratt & Whitney (Raytheon Technologies Corporation)
Cummins Inc.
Rolls-Royce Plc
Aero Engine Components Ltd.