Flights in and out of Geneva Airport in Switzerland were still only operating at 70% capacity on Wednesday afternoon in the wake of severe disruption to air traffic services caused by flood water damaging equipment in the basement of the air traffic control center. ATC provider Skyguide said the restrictions would apply until further notice and said the exact cause of the emergency was being investigated.

Shortly after 10 p.m. local time on Tuesday, Skyguide closed all airspace around Geneva as it tried to assess the damage to cooling systems that threatened to overheat air traffic control equipment in the facility’s data area. Some flights resumed soon after midnight, but operations were then restricted to 50% capacity until 10 a.m. today. The flash flooding occurred following torrential rain that caused widespread disruption across the city and surrounding areas.

Three main FBOs operate out of Geneva Airport’s General Aviation Terminal: Signature Flight Support, Jet Aviation, and Swissport Executive. Business aircraft movements are restricted, as well as airline operations.