Cuba Plane Crash: Investigation launched over why Boeing 737 went down in Havana
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The investigation into the crash is now underway, and one of the black boxes has been found in good condition. Earlier we talked to an aviation expert and former commercial airline pilot JP Tristani. He explained what evidence the black box could reveal.  
JP TRISTANI AVIATION ANALYST "First of all, and primarily, the cockpit voice recorder. You are going to hear what the pilots experienced, what they saw, and possibly their initial reactions. So there's a lot of maintenance records that has to go through and of course the most important, is the pilot training."