The missing Malaysia Airlines aircraft was a 777-2H6ER with tail number 9M-MRO and serial number 28420. According to Aviation Week Intelligence Network's Fleet database, the aircraft was built in April 2002 and delivered to Malaysia Airlines on May 31, 2002. Powering the aircraft were two Rolls-Royce Trent 892B-17 engines. It was the 404th 777 off the production line.
Prior to its disappearance, Malaysia Airlines operated a fleet of 15 777-200ERs built between 1997 and 2004.
This crash is the fourth hull loss for the 777, coming 245 days after Asiana Airlines lost a 777-200ER on landing at San Francisco. British Airways also lost a 777-200ER on landing at Heathrow in 2008 while an EgyptAir 777-200ER suffered a cockpit fire in Cairo in 2011.
Boeing has built nearly 1,200 777s since the first one took flight in 1994.