A Shaanxi Y-8-200F transport plane operated by the Myanmar Air Force impacted the sea during a flight from Myeik to Yangon in Myanmar. The aircraft carried military personnel and family members and had departed Yangon on a flight to Dawei, Myeik and Bokpyin and back to Yangon via Myeik. On its return, the aircraft arrived in Myeik at 11:55, and departed for Yangon at 13:06 local time. The aircraft climbed to FL180 and proceeded along the coast. It passed two areas with cumulonimbus clouds and the flight crew activated the wing anti-icing. At 13:31 hours an alarm was triggered, indicating engine air inlet icing. At the same time, while flying in the vicinity of another area with cumulonimbus clouds, cross wind increased from 8 knots to 42 knots. In these conditions the aircraft stalled and entered a spin. The flight crew failed to recover from the spin and the aircraft impacted the sea.