The TH-73A is the aircraft portion of the Advanced Helicopter Training System. The AHTS will replace the 35-year-old TH-57 training system to meet advanced rotary wing and intermediate tilt-rotor training requirements for the Navy, Marine Corps and Coast Guard through 2050. 

U.S. Navy photo



The TH-73A is the aircraft portion of the Advanced Helicopter Training System (AHTS). AHTS brings the training tools needed to produce the next generations of Rotary and Tilt-rotor pilots for the Navy, Marine Corps, Coast Guard and selected allied nations with current and relevant training platforms.


The TH-73A is the aircraft portion of the Advanced Helicopter Training System (AHTS). AHTS improves pilot training and skills by using current cockpit technologies and modernized training curriculum that reflect the capabilities in the current Navy, Marine Corps and Coast Guard inventory. Using a skills-based approach to training, with just-in-time methodology, incorporating modern technology, AHTS will ensure Rotary Wing Aviators are produced at a higher quality, more efficiently, ready to meet the challenges faced in the fleet.

The TH-73A is expected to be in service for approximately 30 years. It is the replacement for 35-year-old TH-57Bs and TH-57Cs, which will begin sundown in fiscal year 2022 and concludes in the fiscal year 2024 timeframe.

Contractor: AgustaWestland Philadelphia Corp. (Leonardo)

Delivery Date: Calendar Years 2021 through 2024

Propulsion: Pratt & Whitney PT6B-37A turbo shaft engine

Length (rotors turning): 42 feet, 5 inches (12.92 meters)

Height: 10 feet, 9 inches (3.29 meters)

Rotor Diameter: 35 feet, 6 inches (10.83 meters)

Weight (baseline empty weight): 3,325 pounds (1,508 kilograms)

Airspeed: 152 knots

Ceiling: 15,000 feet

Range: 357 nautical miles

Crew: Pilot, Co-pilot, 3 passengers