Power was fully restored to Tan Son Nhat International Airport in Ho Chi Minh City at 12:25PM on Thursday after a blackout left the airport's air traffic control tower without radar for an hour and 14 minutes.
The power went out at the tower at 11:11AM, Tuoi Tre (Youth) newspaper reported, citing an unnamed official of the Civil Aviation Authority of Vietnam.
Consequently, flights out of Tan Son Nhat were held up while incoming flights were diverted to other airports.
Several airlines said the incident forced them to postpone flights departing from Tan Son Nhat around noon.
Incoming pilots were forced to circle or land at nearby airports, they said.