NEW : The union , which represents 12,000 Turkish Airline employees , is involved in an ugly dispute with the company 's management . Two Boeing employees -- among four on flight -- were killed , company says . The plane was carrying the crew and passengers from a training exercise in Hawaii to San Francisco when it crashed into mountains near Mount Rainier, Washington state at about 9:45 a.m. local time. Their identities have not been released . 63 people remained in the hospital , six in critical condition , mayor says . Plane crashed near Amsterdam 's main airport , splitting into three parts .
NEW : Two Boeing employees -- among four on flight -- were killed , company says . The plane was carrying the crew and passengers from a training exercise in Hawaii to San Francisco when it crashed into mountains near Mount Rainier, Washington state at about 9:45 a.m. local time. Their identities have not been released . 63 people remained in the hospital , six in critical condition , mayor says . Plane crashed near Amsterdam 's main airport , splitting into three parts .