American Airlines - IIRC - tried that, but a bunch of flights were delayed when their pilots' iPads dropped dead. More efficient than paper flight maps, you se

American Airlines - IIRC - tried that, but a bunch of flights were delayed when their pilots' iPads dropped dead. More efficient than paper flight maps, you see. I once toured the Oakland Regional Air Traffic Control Center. Their equipment and procedures appeared appallingly primitive - the controllers passed flights to each other by passing handwritten slips of paper. One of the controllers told us that the FAA had been working on a more-modern system for many years, but the reason they still used the paper slips was that "They work".