The case of the flight which vanished without a trace has been described as 'calculated' and 'deliberate', in a new investigation into the tragedy.
Veteran commercial pilot Ewan Wilson and investigative journalist Geoff Taylor have spent months analysing the doomed aircraft's final hours.
They have concluded that the flight's mysterious disappearance and apparent failure of its tracking systems could only be the result of deliberate tampering.
Experienced airline pilot Wilson, who previously ran two airlines, also jetted to Malaysia to interview investigators and relatives of MH370's pilot Zaharie Ahmad Shah.
He and journalist Taylor, both from New Zealand, have reviewed all published data undertaken by Malaysia and other nations involved in the search for the tragic craft.
A total of 239 passengers and crew were lost when the flight left Kuala Lumpar on March 8 for Beijing.
Despite months of searching by naval vessels and specialist aircraft from around the world the vessel has still to be found.
The authors say they have systematically ruled out malfunctions or freak accidents, saying there was no other reason for the flight's change of route.
Describing their findings, pilot Wilson, who has training in investigating air crashes, said: "For the first time we present a detailed analysis of the flight, the incredible route it took, and who we believe was in charge of the aircraft as it plunged into the Indian Ocean."
The men, whose book is titled Good Night Malaysian 370: The truth behind the loss of Flight 370, told stuff.co.nz that relatives were not being told the truth about the diversion.
Journalist Taylor added: "For the sake of the relatives of those on the flight the truth needs to be out there.
"We visited the departure lounge where families sat full of excitement and anticipation waiting for their boarding call. Surely they deserve better than a cover up?"
He added: ‘What happened to MH370 was no accident
"It was deliberate and it was calculated and it should never have been allowed to happen."
The pair conclude their book by calling for changes to the way flight crews are managed and new tamper-proof technical systems to track flights.
The investigation is published as a wrangle continues over the amount of money committed by the Malaysian government into investigating the mystery.
New figures show Kuala Lumpar has spent just a tiny portion of the $90m that the Australian government has set aside for the search, fuelling further criticism of the Far Eastern nation's handling of the crisis.
Ships from Holland and China are currently preparing to map the Indian Ocean floor in a renewed effort to find traces of the flight.