The T-6A Texan II is one component of the Joint Primary Aircraft Training System (JPATS) along with simulators, computer-aided academics, and a Training Integration Management System (TIMS). The joint program, of which the Air Force acts as the executive service, will replace Navy T-34C and Air Force T-37B aircraft. The program uses commercial-off-the-shelf (COTS) subsystems to the maximum extent possible. The aircraft-built by Raytheon Aircraft Company is a derivative of the Swiss Pilatus PC-9 aircraft with a Pratt & Whitney PT-6A-68 engine, digital cockpit, Martin-Baker ejection seats, cockpit pressurization, and an onboard oxygen-generating system. The Navy's total T-6A requirement is 328 aircraft.
The T-6A entered development flight test in July 1998. The FAA approved type and production certification for the T-6A aircraft and production line on 30 July 1999. A successful flight test program and a successful Milestone III full rate production decision followed in December 2001. Both the U.S. Air Force and U.S. Navy have since entered into a full rate production contract with Raytheon for aircraft. To date the U.S. Air Force has received approximately 100 aircraft and the U.S. Navy has received 4 aircraft. The system will be operational at 13 Air Force and Navy bases when fully fielded. The T-6A achieved initial operating capability (IOC) with the Air Force in 2001 at Moody AFB and the U.S. Navy's IOC is in 2003 at Naval Air Station Pensacola, Fla.