An army truck carrying the wrecked Black Hawk helicopter away from its crash-landing site in Songkhla was involved in an accident while passing another truck on Sunday evening.
The accident was reported to police about 6.45pm.
The army truck was taking the wreckage from Thepha district to an aviation centre in Lop Buri province for examination.
It was travelling in the right lane of the Phetkasem highway.
The driver told police the other trailer truck was on his left and it veered suddenly to the right. It hit the side of the army truck, which then veered off the road and hit a tree on the highway median strip.
The driver of the other truck said he was trying to avoid hitting a pickup in front of him whose driver had suddenly hit the brakes.
Police said nobody was injured. Mr Sanit was charged with reckless driving.
The Black Hawk helicopter developed an engine problem shortly after takeoff while flying in Songkhla's Thepha district on Friday morning. The pilot made an emergency crash landing into trees at a rubber plantation.
All seven people on board were injured.
