Malaysia Airlines Flight 370

Malaysia Airlines Flight 370 vanished on March 8, 2014, with 239 people aboard, making it the greatest aviation mystery of the modern era. Despite a $200 million+ search covering 46,000 square miles of Indian Ocean floor, only three debris fragments have been found. The final satellite handshake data narrowed the crash zone, but no main wreckage has been located. In 2024, Ocean Infinity proposed a new search using autonomous underwater vehicles, targeting a 5,000-square-mile area. This case is 30% more expensive in search costs than any previous aviation mystery, exceeding the search for Air France Flight 447. The plane, weighing 600,000 pounds, disappeared from radar and satellite tracking, defying modern technology and investigators' expectations.