Martin:
You mean your agency cannot talk directly to the pilots in these situations? I would seem to cut down on mistakes being made.
Our agency (as are most in Idaho) are allowed to coordinate directions, patient updates and landing zones directly to the responding lifeflight helicopter service. Usually, while the pilot is busy flying, the nurse or paramedic will take the information from a ground crew member. This avoids the hassle of trying to relay through several dispatchers.
Take care,
Stargazer