It was supposed to be the trip of a lifetime - but 257 people died when an Air New Zealand plane crashed into Mt Erebus in Antarctica in 1979. The reasons why are as controversial today as ever.

Erebus Flight 901: Litany of lies?

Episode 1: Champagne flights to the ice

It was New Zealand's biggest peacetime disaster - and some say the nation's biggest cover-up. On November 28, 1979, an Air New Zealand DC10 crashed into the slopes of Mt Erebus in Antarctica, killing all 257 people on board. But who was really at fault - the pilot or the government-owned airline? On the 40th anniversary of the tragedy, presenter Garry McAlpine and writer/director John Keir talk to the key players in a quest to discover the truth.

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Erebus Flight 901: Litany of lies?