Reviewing these images makes it  clear why Qantas was quick, and  correct, in grounding its A380 fleet. The wing  of the jet shows remarkable structural strength in  sustaining damage that might have destroyed the airliners of earlier  decades, but the questions as to whether control system revisions are  necessary to deal with some of the consequences in terms of failed  hydraulics and fuel imbalance are said to be very actively under  consideration.
 And the questions concerning the timeliness of the Rolls-Royce  responses to a known problem, and its capacity and willingness to share  them with the airlines concerned will not go away. If the engine maker  doesn’t address them its customers will.