The wake turbulence of a Qantas A380 severely roughed up a Saab 340 landing on a parallel runway. Also, the 747-8 passes engine runs and 787 is in the final gauntlet, United pokes at Embraer to see if they have some planes for ...
One would think that an aircraft with additional engines would provide even better performance on normal takeoffs, but the extra engines actually reduces it.