Flight MH370 was meant to be an ordinary night flight to Beijing. It carried 227 passengers and 12 crew from 14 nations, with Captain Zaharie Ahmad Shah, 52, in command. The plane cruised at 35,000 feet, smooth and unremarkable, and approached the edge of its home airspace, where air traffic control would hand it to Vietnam. Then the cockpit made its last radio call, a calm goodnight. Two minutes later, the transponder, the device that broadcasts a plane's identity and location, stopped transmitting. Investigators later judged it had most likely been switched off, but could not say by whom or why. Vietnamese controllers waited for the jet to check in at the handover point. It never did. The plane had vanished from the screens that were watching it, yet it was still flying somewhere in the dark. Where was it going, and why had it gone silent? Everything that followed was an attempt to answer that.
Flight MH370: The Plane That Vanished
Flight MH370 carried 239 people toward Beijing, then turned back and slipped off military radar at 2:22 AM.
A Calm Goodnight
Frequently Asked Questions
What happened to Flight MH370 after its transponder was switched off?
Military radar showed the plane turning sharply left and flying back across the Malay Peninsula toward the Andaman Sea. Satellite handshakes showed it remained airborne for nearly seven hours after going silent, heading south before ending at 8:19 AM.
How did investigators work out where MH370 went without radar?
Engineers studied seven hourly automatic signals between the plane and a satellite. The timing of each signal gave the plane's distance from the satellite, and a small frequency shift showed it was heading south.
Has the cause of the MH370 disappearance been found?
No. The 2018 Malaysian safety report found the plane was under manual control during its turn back but could not determine why. It said unlawful interference by a third party could not be excluded.
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