Boeing has recommended all airlines temporarily suspend Boeing 777 flights that use the same engine as involved in Saturday’s United Airlines flight 328 when the aircraft’s Number 2 engine failed in flight. United has grounded all 24 of its Boeing 777 aircraft that were currently in service. Separately, Dutch authorities were investigating a strikingly similar incident in which a Boeing 747-400 cargo plane dropped engine parts shortly after taking off from Maastricht airport Saturday, according to Reuters. The Boeing 777, commonly referred to as the Triple Seven, is an American wide-body airliner developed and manufactured by Boeing Commercial Airplanes. It is the world's largest twinjet. The 777 was designed to bridge the gap between Boeing's 767 and 747, and to replace older DC-10s and L-1011s.