Malaysia Airlines MH370 : When Malaysia Airlines Flight MH370 disappeared in March 2014, the mystery surrounding the aircraft was only beginning. But one thing changed almost immediately: the flight number itself.
Malaysia Airlines announced that it would retire MH370 and the return-flight designation MH371 after the aircraft disappeared while flying from Kuala Lumpur to Beijing with 239 people aboard. The airline said the decision was made as a “mark of respect” for the passengers and crew, according to NPR.