The Royal Thai Air Force will receive three Sikorsky VVIP S-92 helicopters fitted with the high-end LifePort medical system.
The latest delivery marks the first Sikorsky helicopters for the Royal Thai Air Force.
The S-92 high-level VVIP aircraft were delivered in April and are undergoing a six-month extensive training at Lop Buri Air Base, Thailand.
Sikorsky Global Helicopters president Carey Bond said the aircraft will be used for the Head of State mission.
15 S-92 helicopters are currently serving in the Head of State mission around the world, including in Turkmenistan, Turkey, Bahrain and Kuwait.