The Malaysia Airlines flight went missing on March 8 2014 en route from Kuala Lumpur to Beijing with 239 people on board. The plane went “dark” for one hour and 13 minutes and it is not known what it did during this time. It could have made a single turn, gone around in circles or even landed and taken off again, according to Jeff Wise, the author of The Plane That Wasn’t There.
Mr Wise said: “The big unknown was what happened between 6.28pm when the satcom was turned on and 7.41pm.
“Had the plane made a single turn or flown around in circles, or perhaps even landed somewhere and then taken off again?”
This period of time was key, because it determined which direction the plane started flying in and from where.
If the plane did indeed land and take off again, it could have happened in Malaysia or in a nearby country.
Nearby countries include Thailand, Indonesia, Cambodia and Vietnam, all of which have vast areas of open jungle or mountains.
It is possible therefore that MH370 in fact landed without anyone noticing, before taking off again.
If this is the case, it may have left clues in the place it landed as to what really happened that day.
Families of those lost on MH370 are still desperate for answers, as two searches for the wreckage have come up with nothing.
It is unknown who took the plane, why they took it or where exactly it ended up, among other mysteries.
On the fifth anniversary of its disappearance last month, families gathered to mark the occasion.
Grace Nathan, the daughter of an MH370 passenger, told NBC: “I can’t help but wonder ‘where is my mother?’
“Why did I have to travel all the way to Africa to look at beaches to look for small pieces of debris?
“Why haven’t we found the plane? It invokes a lot of emotions and questions.”