The T-1 Jayhawk is a twin-engined jet aircraft used by the United States Air Force for advanced pilot training. T-1A students go on to fly cargo and tanker aircraft. The 400T is a similar version for the Japan Air Self-Defense Force.
The T-1A Jayhawk is a medium-range, twin-engine jet trainer used in the advanced phase of USAF Specialized Undergraduate Pilot Training for students selected to fly strategic/tactical airlift or tanker aircraft. It is used also for training Air Force Navigators and Naval Flight Officers in low level flight procedures during the Intermediate Jet phase of training. It replaced the T-39 Sabreliner in the Intermediate phase of NFO training. The T-1 Jayhawk shares the same letter and number as the now retired T-1 SeaStar under the 1962 United States Tri-Service aircraft designation system.
The swept-wing T-1A is a military version of the Beechjet/Hawker 400A. It has cockpit seating for an instructor and two students and is powered by twin turbofan engines capable of an operating speed of Mach .78. The T-1A differs from its commercial counterpart with structural enhancements that provide for a large number of landings per flight hour, increased bird strike resistance and an additional fuselage fuel tank. A total of 180 T-1 trainers were delivered between 1992-1997.