Kiwi sister of MH370 victim says new claims bring no comfort

A group of experts has blamed the pilot of missing flight MH370 for bringing the plane down, but a Kiwi who lost her brother says that brings her no comfort.

On Australia's 60 Minutes, air crash investigator Larry Vance said the disappearance was not the result of an accident, but rather a planned suicide by pilot Zaharie Shah.

"He was killing himself. Unfortunately he was killing everyone else on board, and he did it deliberately," Mr Vance said.

The experts said data from military radar proves it was a deliberate act, with a 180-degree turn south-west just as the plane dropped off civilian radar and a journey down the Thai and Malaysian borders that dipped in and out of the airspace of both.

Australia's Transport Safety Bureau concluded that the plane hit the ocean at speed. Few pieces have been found, but the plane's flaperon was found intact. 

Some say if it was out of control, there should be thousands or millions more pieces.

"I worked on Swiss Air 111, which was a high-impact crash. We had 2 million pieces," Mr Vance said.

The experts claim the aircraft was landed gently and still lies intact on the ocean floor.

"The pilot wanted it to disappear forever," Mr Vance said. 

But many others are not convinced - including New Zealander Sara Norton. Her brother Paul Weeks went down on-board, but she says she's no closer today to the truth.

"There is no evidence to prove anything at all, so we're in the same position we've always been," she said.

The answers lie in the ocean depths, where a private company has resumed the search. While they still hunt for MH370, closure is just as hard to find.