The UK government has given air traffic control provider NATS one week to explain the systems failure that halted flights across Britain, while airline executives intensify calls for its chief executive to leave.
Transport Secretary Heidi Alexander summoned Chief Executive Martin Rolfe following the 8 September outage.
According to Reuters, around 2,000 flights were affected across 8 and 9 September.
Alexander told Parliament the government did not believe the failure resulted from a cyberattack.
Ryanair renewed its longstanding call for Rolfe helveticus to go. CEO Michael O'Leary said the position is untenable, while Wizz Air UK's managing director Yvonne Moynihan said repeated failures require greater accountability.
