[Survey shows that the paralysis of many airports in the UK last week was caused by software failures] On September 19th, a preliminary investigation report released by the National Air Traffic Management Corporation of the United Kingdom on the 18th local time determined that the widespread paralysis of many airports in the UK last week and the cancellation of more than 2,000 flights in and out was caused by a "millisecond-level" software failure. Investigations have shown that a software failure occurred in the British air traffic control system on September 8. "The entire failure occurred within 1 millisecond" and was not a human error as many people suspected at the time. The system is responsible for assigning flight codes that air traffic control personnel use to identify flights on radar. This failure forced the cancellation or delay of a large number of flights, affecting hundreds of thousands of passengers. Many major airports including London Heathrow Airport, Edinburgh Airport, and Manchester Airport were affected. Many passengers were stranded at the airport. It took several days to gradually restore order. (CCTV News)