This truly is an epic level of incompetence from start to finish. If PIA were not a state airline they would be very worried about their operating licence being taken away. There is however a tried and tested method for responding to these kind of situations as demonstrated with Korean. In their case flight operations expertise was parachuted in from Delta and the operating culture was addressed, with a marked improvement in safety. Imran Khan is a smart (Oxford educated) leader. I am sure someone will point him in the right direction. They have some links to Air Canada for example so maybe that would be somewhere to look for help. The Pakistan cricket team (Imran was one of their greatest players) has had foreign coaches so the concept should be familiar.