In the absence of a definitive cause of disappearance, air transport industry safety recommendations and regulations citing Flight 370 have been intended mostly to prevent a repetition of the circumstances associated with the loss. These include increased battery life on underwater locator beacons, lengthening of recording times on flight data recorders and cockpit voice recorders, and new standards for aircraft position reporting over the open ocean.
This three-part documentary was released on 'Sky' (UK) and some other broadcasters as 'MH370: The Lost Flight'. It was also released on 'Channel 5' and 'My5' (UK) as 'Flight MH370'
The search for the missing airplane became the most expensive in the history of aviation. It focused initially on the South China Sea and Andaman Sea, before analysis of the aircraft's automated communications with an Inmarsat satellite indicated a possible crash site somewhere in the southern Indian Ocean.
With all 227 passengers and 12 crew aboard presumed dead, the disappearance of Flight 370 was the deadliest incident involving a Boeing 777 and the deadliest in Malaysia Airlines' history until it was surpassed in both regards by Malaysia Airlines Flight 17, which was shot down while flying over conflict-stricken eastern Ukraine four months later on 17 July 2014.
The crew of the Boeing 777-200ER (MH370), last communicated with 'Air Traffic Control' around 38 minutes after takeoff when the flight was over the South China Sea. The aircraft was lost from radar screens minutes later, but was tracked by military radar for another hour, deviating westward from its planned flight path, crossing the Malay Peninsula and Andaman Sea. It left radar range 200 nautical miles (370 km; 230 mi) northwest of Penang Island in northwestern Peninsular Malaysia.