General Motors and Malaysia Airlines are both in trouble but one is giving a lesson in how to handle a fatal crisis while the other is offering a masterclass in how not to. There is a glaring contrast in the behaviour, and ability to cope with public criticism, of Mary Barra, GM’s chief executive, and Ahmad Jauhari Yahya, the chief executive of Malaysia Airlines – although Ms Barra has a simpler task.

Both face the most critical corporate challenge – how to respond when your customers die because they used your product or service. The GM accident victims were a dozen drivers or passengers of faulty compact cars; in Malaysia Airlines’ case, the presumed victims are the 239 passengers of the missing flight MH370.

Ms Barra, who took over as GM’s boss in January, has so far reacted in an exemplary manner. She has stepped up to take personal responsibility, admitted that GM is to blame and apologised; emphasised her sorrow “as a mom with a family of my own” and promised not only to make amends but to use the crisis as a turning point for GM.