Dahdaaaahhhhhhhh!!! G'day mate, welcome to Oz!
What do I think caused it????
I DON'T KNOW, therefore innocent until proved guilty.
My hunch? Before the flight, they were worried about two things (a fact I discussed with them). No IF clearance and FADEC run-up/down. They even spent 10 mins running through the drills. What could cause an aircraft to climb into cloud, go balls out 165kts and prevent slowing down? A FADEC run-up at the worst moment. A lack of IF/ICING clearances would discourage a climb to SA.
PS. They did the morning tasking in a Mk 1 Chinook that was not available for this task.
I am currently weighing up the pros and cons of my next insult, I think in this case it may be worth a ban from the site......