But neither Wratten nor Day were experienced on Chinooks.
Wratten was through and through fixed wing (like yourself, Cazatou/K52) and Day flew mainly Wessex; as far as I recall, he was never operational on Chinook, either Mk 1 or Mk 2.
Cazatou, kindly remind us again how much rotary wing experience you have?
It's a rhetorical question and I say remind again, but actually, you have never answered the question here, despite me asking you at least twice before, I think.