EHEST brings together helicopter manufacturers, operators, regulators, helicopter and pilots associations, research organisations, accident investigators and military operators from across Europe. Participants come from organisations including the following: EASA, EHA, UK CAA, EHAC, UK MoD DASC, QinetiQ, RAeS, Agusta Westland, Eurocopter, UK AAIB, Irish AAIB, BFU Germany, Bristow Group, CAA Norway, Shell Aircraft Ltd/IHST, NLR, EHOC, FOCA, FAA/US JHSAT, ENAC Italy, AIB Hungary, and Air Glacier (CH). EHEST addresses the broad spectrum of helicopter operations across Europe; from commercial air transport to general aviation and flight training activities. EHEST brings together around 130 participants, from which 70 are actively involved in EHSAT.