BT-13A Valiant Facts Vultee BT-13A Basics Called the "vibrator" by those who flew it, the Valiant arrived at Goodfellow in August 1941 and remained the chief basic trainer here until replaced in that role by the AT-6 Texan in late 1944. Crew and Equipment Crew: 2 Equipment: Fixed landing gear Symmetric airfoil Roles Trainer History of BT-13A 42-04130 Displaying this aircraft, the base honors its past cadre of instructor pilots plus the 8,800 graduates who learned to fly in the Valiant here at Goodfellow.