Malaysia Airlines Flight 370, B–777–200ER, disappeared with 239 passengers and crew. International search and recovery efforts for the aircraft and black boxes have involved 29 nations and hundreds of millions of dollars in resources, becoming the most expensive search and recovery mission in aviation history. Nine years later, the aircraft is still missing, and the cause of the crash is still unknown. (B) On June 1, 2009, Air France Flight 447 crashed into the Atlantic Ocean with 216 passengers and 12 crewmembers. Despite locating aircraft wreckage within 5 days, it still took nearly 2 years and an estimated cost of over $160,000,000 to recover the FDR and CVR from the bottom of the Atlantic Ocean at a depth of 12,000 feet. (C) On October 29, 2018, Lion Air 610 became the first of two fatal B–737 Max 8 crashes. Despite being in only 100 feet of water, it took investigators 77 days to locate and recover the CVR, which provided critical information. (D) On July 2, 2021, Transair Flight 810, B–737–200, crashed off the coast of Mamala Bay, Oahu. While investigators knew the location of the aircraft, it took 4 months to recover the FDR and CVR from the bottom of the ocean. (E) On January 9, 2021, Sriwijaya Air Flight 182, B–737–500, crashed into the Java Sea in a depth of only 89 feet, yet the recovery of the CVR still took 81 days. (F) On June 30, 2009, Yemenia Airlines IY626 crashed off of the coast of Comoros, with 152 passengers and aircrew. The sole survivor, a 12-year-old girl, was found clinging to wreckage after floating in the ocean for 13 hours. Her accounts shared that more passengers survived the crash but succumbed to hypothermia due to the delay in locating the downed aircraft. The FDR and CVR were not recovered until nearly 2 months later, at a depth of 3,900 feet. (G) On January 1, 2007, Adam Air Flight 574, carrying 102 passengers and aircrew, crashed off the coast of Indonesia. The FDR and CVR were located within 1 month, but could not be recovered until 7 months later due to the difficulty of the