Prime Minister Jacinda Ardern has given the green light for a national memorial of the Erebus disaster and says she will meet with the families to discuss it.
Ardern said she wanted the memorial in place by the 40th anniversary in two years' time.
An Air New Zealand DC10 crashed into Mt Erebus in Antarctica on November 28, 1979, killing all 257 people aboard.
She said she would sit down with the families and Air New Zealand to talk about the memorial.
"I know families and others have been seeking a national memorial for some years and it's high time we as a nation formally recognised this tragic event."
She had already received some advice from officials.
"I'm committed to making progress as soon as possible. We have waited too long already."