T-37 USAF airplane modelCessna T 37 USAF airplane model. The T 37B, first operational in 1959, has undergone upgrades such as improved radio navigation, UHF radio, and redesigned instrument panels. A variety of air forces, including those of Thailand, Greece, Chile, Jordan, Turkey, and Pakistan, use the T 37B. At Sheppard Air Force Base in Texas, students from 12 North Atlantic Treaty Organization countries begin their Specialized Undergraduate Pilot Training [SUPT] by