While flying 38,000 feet (11,580 meters) above the Indian Ocean, the plane's software incorrectly measured speed and acceleration, causing the plane to suddenly shoot up 3,000 feet (915 meters).
The pilot disengaged the autopilot and descended and landed safely back in Perth. A software update was quickly made on planes around the world.
Malaysia Airlines has 15 Boeing 777-200ER jets in its fleet of about 100 planes. The first was delivered on April 23, 1997. The most recent on Dec. 13, 2004, according to Boeing. The 200ER is one of four versions of the 777.
The 777 is capable of flying 7,250 miles nonstop. Its two Rolls-Royce Trent 875 engines each have 74,600 pounds (33.8 tons) of thrust, letting the plane cruise at Mach 0.84, or nearly 640 mph. (1,000 kph).
A new model has a list price of $261.5 million, although airlines typically negotiate discounts.
The 777 was the first twin-engine plane to be immediately certified to fly over the ocean as far as 180 minutes from any emergency landing airport.
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