airplane they've gone on to. so it's a very, very robust system that is giving us this wonderful safety record that we enjoy in aviation. and so the system is working. >> keeping in mind, though, this means that airlines that use these planes that have been affected, these airlines will have to cancel thousands of flights during the summer travel season. so surely this will come as a major disruption for air carriers. >> well, look, it may appear as that is the case, george, but, in fact, my understanding and in the intro the faa said that airlines have got ten days to rectify the issue. so this -- these sorts of changes and rectification can be done overnight. and that's typically what happens, is the regulator will give airlines a certain period of time in which to change the part out, unless it's in their