Federal investigators said that Boeing didn’t make pilots aware that when a plane rapidly depressurizes, the cockpit door will fly open ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The cockpit door aboard last week’s troubled Alaska Airlines flight surprised the flight crew by swinging open seconds after the fuselage suffered a potentially catastrophic rupture, according to the chair of the federal agency investigating the incident. National Transportation Safety Board Chair Jennifer Homendy said during a news briefing Monday that the cockpit doors flew open immediately after the paneled-over exit door popped off of the fuselage. A flight attendant had to try three times to get it...