Speechless is right. The incident occured in 1965 near Nanga Gaat (for the old time RNers!). The pilot was an ex Ternhill instructor & Squadron QHI, so everything would suggest he should have known better. The problem was no other helicopter could land there with him shut down & the bigger S55 or Wessex Mk1 would not have fitted which is why they used the little Hiller, so it was either a long walk or wait for a winch fitted helicopter that could hover that close to the mountain at those temps or wait to get shot. He did do a long ground run & test hover, remarked that the vibrations were minimal & so elected to take off. Another problem was that there was not another suitable landing site nearby, just jungle or river.