Recordings from CTBTO hydrophones was analyzed to determine an impact location for Air France Flight 447 and Malaysia Airlines Flight 370 , both of which were lost without a known crash site . No data was detected in the event of Flight 447 , even after it was reassessed once the location of the wreckage was known . As of July 2014 , Flight 370 remains missing with no known crash site or confirmed debris . Since the only evidence for Flight 370 's final resting site comes from an analysis of its satellite transmissions , which has resulted in an imprecise and very large search area , hydroacoustic recordings from CTBTO were analyzed to potentially determine and locate its impact with the Indian Ocean . Analysis of available hydroacoustic recordings ( including those made by a CTBTO hydrophone located off Cape Leeuwin , Western Australia ) identified one event which may be associated with Flight 370
Malaysia Airlines Flight 370
Malaysia Airlines Flight 370
Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization