The case of the missing Malaysia Airlines (MAS) flight MH370 that disappeared without a trace has been described as “deliberate” and “calculated”, 100 days since it vanished on a routine flight from Kuala Lumpur to Beijing.

Veteran commercial pilot Ewan Wilson and investigative journalist Geoff Taylor have spent months analysing the doomed aircraft’s final hours and concluded that the flight’s mysterious disappearance and apparent failure of its tracking systems could only be the result of deliberate tampering.

The pair have co-written a book ‘Good Night Malaysia 370: The Truth Behind the Loss of Flight 370’ claiming that a conclusion of foul play can be reached via a process of elimination.

They also conducted interviews with relatives of flight MH370 pilot Zaharie Ahmad Shah as part of their investigation.

“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,” Wilson told stuff.co.nz.

“The disappearance of Malaysia Airlines flight MH370 captured the world’s attention and shocked everyone – the outcome is gut-wrenching,” he added.

They also believe that relatives were not being told the truth about the diversion.

Taylor meanwhile claims authorities owe it to the families of the 239 people on board the Boeing-777 aircraft that vanished on March 8 to tell the truth.

“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?

“What happened to MH370 was no accident. It was deliberate and it was calculated and it should never have been allowed to happened,” Taylor said.

The pair’s claims come as a Dutch ship prepares to travel to the Indian Ocean to help map the area where the plane is believed to have crashed.

According to the UK’s Express, the MV Fugro Equator, owned by Dutch-based Fugro Survey, will assist a Chinese military ship in searching for clues of the missing jet.