The CAAV issued a press release on the problem later in the day,saying that the interference happened from 7h47am to 8h05am, causing sixflights to be delayed and one flight to be diverted to a nearbyairport.
The air traffic control system was back to normal at 8h05am.
The CAAV said agencies in the aviation sector are coordinating withthe Authority of Radio Frequency Management to investigate the reason ofthe problem.-VNA