T-1A JayhawkBeech T 1A Jayhawk airplane model. The Beech T 1A Jayhawk is a medium range, twin engine jet trainer. It is used by the US Air Force's Air Education and Training Command to train student pilots to fly airlift or tanker aircraft. The swept wing T 1A is the military version of the Beech 400A multi place business jet. It has cockpit seating for an instructor and two students and is powered by twin turbofan engines capable of an operating speed of Mach .