Catania Airport in Sicily suspended inbound flights because of an ash cloud formed by renewed activity at Mount Etna's northeastern crater.
Italy's National Institute of Geophysics and Volcanology said the ash cloud reached an altitude of approximately 4 kilometers. A red aviation alert was issued following the volcanic activity, while sector C1 of the airspace was also closed.
Landing capacity reduced to four flights per hour
The airport management announced that inbound flights would be suspended until 4 p.m. local time on Saturday, September 26. Before the decision, landing capacity had been restricted by reducing the number of flights from the usual 12 per hour to four.
Before flights were completely suspended, at least 10 flights operated by ITA Airways were diverted to other airports. Five of these flights were sent to Palermo, three to Trapani and two to Comiso.
One flight operated by Volotea was also diverted to Comiso Airport.
Airspace sector C1 closed
The Catania Airport Operations Coordination Unit later closed sector C1 of the airspace. As a result, landings and takeoffs were not permitted in that sector.
The ash cloud formed because of renewed volcanic activity at Mount Etna's northeastern crater.