The disappearance of Malaysia Airlines Flight MH370 on March 8, 2014, remains the most baffling mystery in aviation history. En route from Kuala Lumpur to Beijing with 239 people on board, the Boeing 777 vanished from civilian radar just as it was entering Vietnamese airspace. Military radar later revealed the plane made a sharp, deliberate turn back across the Malay Peninsula and flew for seven more hours over the Indian Ocean. Despite the largest and most expensive search in history, the main wreckage has never been found. In 2026, the mystery persists, with theories ranging from a sophisticated hijacking or technical failure to the pilot-suicide theory, supported by data found on the captain's home flight simulator that matched the aircraft's final path.