Singapore City, Nov. 14 -- Aviation industry expert Subhash Goyal on Saturday observed that the recent temporary nationwide ground stop in the United States, caused due to the ageing of the air traffic control (ATC) communications systems, will likely have a ripple effect across the world as imports, exports and travellers reel from its impact.

Speaking exclusively to ANI on the recent flight disruption, which has been described as one of the largest in US history, Goyal ruled out a cyber attack as the cause.

"The US Government, Homeland Security and other agencies have done a detailed investigation. According to them, their whole communication system was overloaded because it was an old system. They have denied it was either a cyber at...