the runway collision between Pan Am and KLM Boeing-747s at Tenerife. United Airlines Flight 232 Captain Al Haynes, pilot of United Airlines Flight 232, credits CRM as being one of the factors that saved his own life, and many others, in the Sioux City, Iowa, crash of July 1989: Air France 447 One analysis blames failure to follow proper CRM procedures as being a contributing factor that led to the 2009 fatal crash into the Atlantic Ocean of Air France Flight 447 from Rio de Janeiro to Paris. The final report concluded the aircraft crashed after temporary inconsistencies between the airspeed measurements—likely due to the aircraft's pitot tubes being obstructed by ice crystals—caused the autopilot to disconnect, after which the crew reacted incorrectly, causing the aircraft to enter an aerodynamic stall from which it did not recover. Following recovery of the black box two years later, independent analyses were published before and after the official report was issued by the BEA, France's air safety board. One was a French report in the book "Erreurs de Pilotage" written by Jean-Pierre Otelli, which leaked the final minutes of recorded cockpit conversation. According to Popular Mechanics, which examined the cockpit conversation just before the crash: The men are utterly failing to engage in an important process known as crew resource management, or CRM. They are failing, essentially, to cooperate. It is not clear to either one of them who is responsible for what, and who is doing what. First Air Flight 6560 The Canadian Transportation Safety Board (CTSB) determined a failure of Crew Resource Management was largely responsible for the crash of First Air Flight 6560, a Boeing 737-200, in Resolute, Nunavut, on August 20, 2011. A malfunctioning compass gave the crew an incorrect heading, although the instrument landing system and Global Positioning System indicated they were off course. The first officer made several attempts to indicate the problem to the captain but a failure to follow airline procedures and a lack of a standardized communication protocol to indicate a problem led to the captain dismissing the first officer's warnings. Both pilots were also overburdened with making preparations to land, resulting in neither being able to pay full attention to what was happening. First Air increased the time dedicated to CRM in their training as a result of the accident, and the CTSB recommended regulatory bodies and airlines to standardize CRM procedures and