The helicopters transport rescue workers and food and other necessary supplies to residents in flood-hit areas in the two northern provinces.
Flood and landslides triggered by Yagi, the strongest storm in Viet Nam in 70 years, have killed 200 dead and missing in Northern Viet Nam, including 66 in Lai Cai and 40 in Yen Bai.
On Tuesday, Prime Minister Pham Minh Chinh ordered deployment of forces and equipment, including helicopters to supply food and necessities to residents in flood-hit areas.
The targeted localities include Quang Ninh, Hai Phong, Thai Binh, Hoa Binh, Lao Cai, Yen Bai, Son La, Lai Chau, Dien Bien, Ha Giang, Cao Bang, Bac Kan, Thai Nguyen, Tuyen Quang, Phu Tho, Vinh Phuc, Lang Son, Bac Giang, Bac Ninh, Hai Duong, Ha Noi, Hung Yen, Ha Nam, Ninh Binh, Thanh Hoa./.