A United 777 made a scary plunge toward the ocean shortly after takeoff

A United Airlines 777 leaving Hawaii in December plunged toward the ocean for 21 seconds shortly after takeoff and came within 800 feet of sea level, flight tracking data show. Neither United nor the FAA indicated anyone was injured on United Flight 1722 on December 18. The plunge occurred a little over a minute after takeoff, the data show. The data suggest the remainder of the flight was uneventful. United said it conducted an investigation with the FAA and the pilots union "that ultimately resulted in the pilots receiving additional...