NEW : `` That is the fundamental problem that Boeing is now facing , '' Quest said . Japan regulators 2011 ordered airlines to stop flying their Boeing 787s . Two fleets of Boeing 787s have been grounded in Japan after one jet made an emergency landing . The woes come after the debut of the plane in 2011 , 2011 behind its production schedule . About 50 aircraft have been delivered ; Boeing has more than 800 unfilled orders from airlines .
NEW : Japan regulators 2011 ordered airlines to stop flying their Boeing 787s . Two fleets of Boeing 787s have been grounded in Japan after one jet made an emergency landing . The woes come after the debut of the plane in 2011 , 2011 behind its production schedule . About 50 aircraft have been delivered ; Boeing has more than 800 unfilled orders from airlines .