A transcript of the final conversations between the pilots of missing flight MH370 and air traffic controllers has been released.
According to the UK’s Telegraph, the sequence of messages appear to be routine, apart from two “potentially odd” moments.
The transcript runs from the time the Boeing 777 plane was taxiing on the runway, to its last known position above the Gulf of Thailand.
The flight’s communication started at 00:36:30 and seemed like any other: “ATC (air traffic control), this is MH370, good morning” before being directed by air traffic control to the appropriate runway.
At 00:40:38 the cockpit is recorded saying: “Position 32R, runway ready, permitted to take off. MH370 copies that. Thank you, goodbye.”
Then, after acknowledging air traffic control’s clearance to take off before joining onto the next air traffic controller, the cockpit states: “MH370 position confirmed, flight altitude 180, follow the command and turn right, target IGARI waypoint.”
At 00:42:40, after MH370 confirmed it had taken off successfully, air traffic control instruct the plane to fly towards “Igari”, a waypoint halfway between Malaysia and Vietnam.
After leaving the airports control tower range, MH370 is instructed to change the frequency to that of the Malaysian air traffic controller.
“132.6, MH370 copies that,” it states at 00:42:52.
The next 20 minutes is fairly normal communication, with air traffic control giving the cockpit permission to ascend to an altitude of 25,000 feet and then 35,000 feet.
The first unusual moment occurs at about 1:07 when the cockpit advises that, “MH370 remaining in flight altitude 350 (35,000 feet),” an unnecessary call that had already been spoken six minutes earlier.
This is a pivotal moment for flight MH370, happening about the same time as the plane’s ACARS signalling device sent its last message before it was, according to reports, deliberately switched off.
Air traffic control contacted MH370’s cockpit 21 minutes later saying “MH370, please contact Ho Chi Minh City 120.9, good night,” telling the pilots to now change frequencies to Vietnam’s air traffic controller. A change that never happened.
“All right, good night,” the cockpit responded in its final words before disappearing.
This is also considered odd communication, with the final call spoken in a more relaxed manner than usual when changing to a new air traffic controller. It also happened at the same time the plane took a sharp turn off its flight course.
This article originally appeared on news.com.au.