News BREAKING RAF Helicopter is believed to have crashed on Snowdonia mountain peak. Air ambulance en route. Last updated: August 9, 2016 16:02 AIRLIVE 8 years ago 0 Min Read UK defense officials say all 4 on board rescued after Griffin training helicopter went down due to ‘technical issue’ in Sonwdonia, Wales. Griffin training helicopter completed “precautionary landing” in Snowdonia after “technical issue”.