Questions are being raised about the conclusions reached by an official investigation into a deadly 2010 skydiving plane crash at New Zealand's Fox Glacier.
Nine people, including two Australians, were killed when the Fletcher FU24-954 plane crashed shortly after take-off at the end of the runway at Fox Glacier airport on September 4, 2010.
There were no survivors.
A 2012 Transport Accident Investigation Commission (TAIC) report found the plane was unbalanced, with too much weight towards the rear, causing it to crash.
However, just days after the crash, large parts of the plane's wreckage were buried - on the instruction of the TAIC - meaning they weren't examined by investigators, a local current affairs TV program reports.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Among the parts buried was the plane's control stick and cables.
Investigator Andrew McGregor, who's conducted TAIC investigations in the past, says the TAIC's investigation in this case was flawed.
"I would think on the evidence we have available, that a control system failure of some sort is likely," he told TV3.
"In my view we do have sufficient information to warrant the investigation being reopened."
The crash killed four tourists - Glenn Bourke, 18, of Australia, Patrick Byrne, 26, of Ireland, Annita Kirsten, 23, of Germany, and Brad Coker, 24, of England.
The crew were Skydive New Zealand director Rod Miller, 55, pilot Chaminda Senadhira, 33, Adam Bennett, 47, an Australian living in Motueka, Michael Suter, 32, and Christopher McDonald, 62.
