I do not have a medical background or indeed have any first aid training. Therefore I am not qualified to make an assessment.
I stand by my decision to ring the emergency services. The lad took a heavy fall, was sure he'd broken his collarbone and laid down looking pale.
I didn't ask for the air ambulance I asked for mountian rescue. I thought if required they would stretcher him from his location to where an ambulance could pick them up.
The air ambulance decision was made by the operator based on the information I provided. Apart from a grid reference I told him about the fall, his suspected injury, and location.