Cockpit Voice Recorder of the crashed Lion Air Boeing 737 MAX8 revealed that Pilots were scrambled through a handbook to understand why the jet was making uncontrollable movements in its final minutes before crashed into the water.
It is the first time the voice recorder contents from the Lion Air flight JT610 have been made public.
Following as the events unfolded in last few minutes before the crash, as reported on Reuters.
According to CVR, The captain was at the controls, while the first officer was handling the radio during the takeoff. Then when the crew encountered, altitude fluctuation of the aircraft, first officer reported a “flight control problem” to air traffic control.
During the last minutes before the crash, airspeed was mentioned on the cockpit voice recording, and an indicator showed a problem on the captain’s display but not the first officer’s.
The captain asked the first officer to check the ‘quick reference handbook’, which contains checklists for abnormal events.
For the next nine minutes, jet pushed the nose pitch down and the captain fought to climb, but the computer, still incorrectly sensing a stall, continued to push the nose down using the plane’s trim system. The struggle between the computer and the captain continued till the crash.
The pilots of JT610 remained calm for most of the flight, and near the end, the captain asked the first officer to fly while he checked the manual for a solution.
About one minute before the plane disappeared from radar, the captain asked air traffic control to clear other traffic below 3,000 feet and requested an altitude of “five thou”, or 5,000 feet, which was approved, the preliminary report said.
As the 31-year-old captain tried in vain to find the right procedure in the handbook, the 41-year-old first officer was unable to control the plane,
“It is like a test where there are 100 questions and when the time is up you have only answered 75,” a source said. “So you panic. It is a time-out condition.”
The Indian-born captain was silent at the end, all three sources said, while the Indonesian first officer said “Allahu Akbar”, or “God is greatest”, a common Arabic phrase in the majority-Muslim country that can be used to express excitement, shock, praise or distress.
The plane then hit the water, killing everyone on board.