UK air controllers say flight data sparked glitch that snarled hundreds of flights

LONDON: A technical failure that saw hundreds of flights delayed and canceled across the UK was caused by problems in some flight data received by Britain’s national air traffic controllers and was not a cyberattack, authorities said tuesday.
The breakdown, which hit on a late-summer holiday monday that is one of the busiest days of the year for air travel, saw thousands of travellers stranded at airports. Transport secretary Mark Harper said it was the worst incident of its kind in almost a…