FRANCE has vital information about the final moments of doomed flight MH370 that it will not share, a dad who lost his wife and children in the crash has claimed.

Ghyslain Wattrelos lost his wife Laurence and two teen kids Hadrien and Ambre when the jet vanished on March 8, 2014.

8 Ghyslain Wattrelos believes the French government his hiding information about the disappearance of MH370 Credit: AFP or licensors

He says he was told by the Gendamarie Air Transport team investigating the jet's disappearance they had found "inconsistencies" in the Malaysian investigation’s official report.

Now the devastated dad believes the French government is still withholding information about the missing plane.

Ghyslain has written to president Emmanuel Macron demanding more information be released to the public.

He told the Daily Star: “The Australians released a French photo a few months ago, while France told us they had nothing.

8 Ghyslain lost his wife and two teenage children aboard the plane Credit: Facebook

Malaysia Airlines flight MH370 went missing on March 8, 2014, with 239 passengers and crew on board Credit: Alamy

“Four years ago, France sent a lot of satellite photos to Malaysian and Australian investigators showing debris.

“However, when I saw François Hollande, he told me that France had no information.

“It is obvious that France had information that it’s not telling.

Ghyslain also claimed investigators have uncovered a mysterious "third entity" which may be withholding technical data about the path taken by the jet.

They have also identified a number of "curious passengers" aboard the Boeing 777 who they believe warrant further investigation.

8 Ghyslain has written to Emmanuel Macron demanding France release everything it knows about the crash Credit: Getty - Contributor

The GTA also revealed they had identified the presence of "curious" passengers, whom "we should continue to investigate".

They included a Malaysian national and aeronautics specialist seated directly under MH370’s Satcom module who potentially had the technical knowledge to hack the plane’s communication systems and disguise its route.

8 The dad claims that when he asked previous French president, Francois Hollande he told them France had 'no information' Credit: AFP or licensors

Mr Wattrelos said French investigators had identified a "third entity" in possession of information and/or data relating to the movements of the missing plane.

He said: "We are a little angry and now we want to say stop, it is time that the United States really cooperate on this issue.

"It is necessary to go there because there are three entities that hold important information for understanding what happened on this flight."

In addition to verifying data provided by the FBI and Boeing, investigators were seeking to establish whether the "third entity" sold software capable of reprogramming or even hacking the Satcom, the antenna that communicates to the Inmarsat satellite from the aircraft.

8 A ship combs the southern Indian Ocean during the failed search for the plane's wreckage Credit: EPA

He added: "The essential trail is the Inmarsat data. Either they are wrong or they have been hacked.

"However, these satellite data are essential to better understand the trajectory of the aircraft."

The identity of the "third entity" is unclear but in a Facebook message posted over the weekend, Mr Wattrelos refers to SITA.

SITA is a company which supplies Malaysia Airlines with communications via VHF radio and Inmarsat satellites for its fleet’s ACARS (Aircraft Communications Addressing and Reporting System) avionics.

In the wake of MH370’s disappearance, SITA issued a statement saying it was co-operating with authorities investigating the plane’s fate.

"The Malaysia Airlines ACARS avionics communications via the SITA network is proprietary to the airline,” it said.

8 Aviation experts have previously claimed MH370’s disappearance was a deliberate act carried out by Captain Zaharie Amhad Shah Credit: Enterprise News and Pictures

8 Only a handful of pieces of the plane have been recovered Credit: AFP or licensors

8 A piece of the aircraft pictured in the where it was found in Mossel Bay, South Africa Credit: AFP or licensors

"We are fully supporting the airline and all the relevant authorities in their ongoing investigation of flight MH370."

Engineer and aviation expert Dr Victor Iannello, who was a member of the Independent Group (IG) of advisers assisting the ATSB in the original search for MH370, expressed doubt the French would uncover evidence data had been deliberately removed or hacked.

"It’s not clear what additional information the French investigators expect to obtain while in the US.

"Boeing has co-operated with the Annex 13 investigation team, and is unlikely to provide private French investigators with data that has not already been made public,” he wrote on his blog.

MH370 conspiracy theorists think line of ‘crushed trees’ are proof the missing plane crash-landed in the Cambodian jungle

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"The mysterious ‘third entity’ referred to by Mr Wattrelos that might be selling software capable of maliciously altering SATCOM data is also unknown, although there are a handful of companies in the US and Canada that supply hardware and software for designing, building, and testing parts of the Inmarsat network."

France is the only country still actively investigating the fate of the plane, which vanished en route from Kuala Lumpur to Beijing on March 8, 2014 with 239 on board.

A version of this story originally appeared on news.com.au

MH370 - WHAT HAPPENED? Malaysia Airlines Flight MH370 took off from Kuala Lumpur and was heading to Beijing with 239 people on board. Passengers included Chinese calligraphers, a couple on their way home to their young sons after a long-delayed honeymoon and a construction worker who hadn't been home in a year. But at 12.14am on March 8, 2014, Malaysia Airlines lost contact with MH370 close to Phuket island in the Strait of Malacca. Before that, Malaysian authorities believe the last words heard from the plane, from either the pilot or co-pilot, was "Good night Malaysian three seven zero". Satellite "pings" from the aircraft suggest it continued flying for around seven hours when the fuel would have run out. Experts have calculated the most likely crash site around 1,000 miles west of Perth, Australia. But a huge search of the seabed failed to find any wreckage - and there are a number of alternative theories as to its fate.

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