A Vasco passenger plane was forced to make an emergency landing in the central province of Phu Yen on Tuesday afternoon due to smoke in the cabin.
Passengers on the flight said about 15 minutes after leaving Tuy Hoa Airport for Ho Chi Minh City at 4 p.m., they smelt burning aboard the ATR-72 aircraft while the cabin filled with smoke and the air conditioning system stopped working.
They said flight attendants gave children and old people on board tissues so that they could cover their noses and mouths to avoid suffocation.
They also said some people wore life-jackets for fear that the airplane would drop into the sea.
The pilot of the aircraft immediately decided to turn around and he landed safely.
The carrier Vasco, a unit of Vietnam Airlines, announced at 5 p.m. that the flight was canceled, adding that it was investigating the cause of the incident.
On Tuesday morning, there was another incident involving a Vietnam Airlines ATR-72 aircraft, which resulted in the flight from HCMC to the southernmost province of Ca Mau being delayed.
At 5.30 a.m., a Vietnam Air Petrol Company (Vinapco) tank truck crashed into the plane at Ho Chi Minh City's Tan Son Nhat International Airport, damaging the plane's tail assembly.
The plane was about to pick up passengers.
Relevant executives said the tail assembly's cover would have to be replaced.
Initial investigations showed that the tank truck driver failed to brake when he drove the vehicle off the runway after filling the plane with petrol.
Vinapco suspended truck driver Le Van Dung and technician Le Doan Tho.
On May 9, a Vinapco tank truck collided into a Vietnam Airlines Boeing 777, severely damaging the plane's engine and spilling petrol over the runway.
The incident happened at 10.30 p.m. when the plane was about to take off for Frankfurt from Tan Son Nhat International Airport.