evidence: Flight MH370 was a Boeing 777 with 239 people on board when it vanished shortly after takeoff from Kuala Lumpur on March 8, 2014 There is new hope in the disappearance of the Malaysia Airlines flight that vanished 10 years ago. [...] Flight MH370 was a Boeing 777 with 239 people on board when it vanished shortly after takeoff from Kuala Lumpur on March 8, 2014.