On the morning of November 11th, the Central Vietnam Air Traffic Management Company announced that due to complex weather conditions and reduced visibility, many flights at Da Nang International Airport were cancelled. Many flights had to circle in the air, waiting for more favorable weather conditions before attempting to land.
On November 9th alone, 17 flights were affected. Specifically, from 5 PM on that day, visibility on runway 35R at times dropped below landing standards.
Specifically, at Da Nang International Airport, 12 flights had to circle and 4 flights had to circle back, and at Phu Bai International Airport, 1 flight had to circle back.
The reason given is that from the evening of November 9th, heavy rain and strong winds occurred in Da Nang, reducing visibility to 750-1,300 meters, which is below operating standards, causing many flights to be delayed.
During this period, many departing aircraft requested to avoid clouds after takeoff, instead of following their assigned standard departure flight paths.
According to the Central Vietnam Air Traffic Management Company, there have been many instances where the unit has had to notify relevant units about the implementation of the Ground Delay Program in order to proactively regulate aircraft traffic and limit congestion in the approach airspace.
In addition, the duty crew coordinated with long-haul air traffic control facilities in Hanoi and Ho Chi Minh City to adjust speed and organize holding patterns so that the aircraft could wait for more favorable weather conditions before continuing its approach for landing.
According to the Central Vietnam Air Traffic Management Company, on November 10th, despite continued warnings of heavy rain in the central region, no flights were affected by the weather.