'I don't think it is right to remove him over one lapse. The focus should be on restoring operations, not on removing a key management personnel.'
According to FlightAware, a flight tracking company, more than 9,500 flights within, into or out of the United States were delayed and more than 1,300 were cancelled due to the system failure.
Here are the world's most courteous, friendly, helpful and efficient airline crews from each continent.