'Millisecond' software error caused air traffic outage that grounded thousands of flights

Error first occurred at 10am but major incident was not declared until 12.30pm, says report A software defect in part of the UK’s air traffic control system corrupted flight data “in the space of a millisecond”, leading to a six-hour outage and mass airline cancellations and…

The air traffic outage that grounded thousands of flights was not caused by a 'military operation' but by a software problem, an initial investigation has found.