The stoppage, on 8 September, affected a quarter of all flights due to be handled by Nats that day. Transport Secretary Heidi Alexander called the disruption “completely unacceptable” and told the CAA to conduct an independent review. She initially gave Nats a week to deliver its preliminary investigation.
The outage has left airlines, who must foot the burden, facing hefty bills for disruption. Tim Alderslade, Chief Executive of Airlines UK, the trade body for UK carriers, said this would run “into the tens of millions”.
