Airspace closure: Cause still not known

Aviation chiefs have admitted they still don’t know what caused a major systems failure that forced the temporary closure of much of Irish airspace yesterday.

Aviation chiefs have admitted they still don’t know what caused a major systems failure that forced the temporary closure of much of Irish airspace Tuesday.

Flow-control measures restricting the number of aircraft operating in Irish airspace remained in place for a time yesterday as the Irish Aviation Authority (IAA) attempted to get to the bottom of the problem.