The accident investigation found that the ground controllers had elected not to monitor in real time the attitude thrusters that controlled the vehicle's yaw motion, and, at the velocity Algranti was flying, the thrusters had been overpowered by the LLTV's aerodynamic forces, causing Algranti to lose control. Due to tight cost constraints on the LLRV and LLTV, wind tunnel testing had been avoided in favor of careful flight testing for evaluation of the vehicles' aerodynamic characteristics. After reviewing the results of the crash investigation, however, it was decided that the third LLTV be loaded into NASA's Super Guppy and flown to the Langley Research Center in Virginia for testing in its full-scale wind tunnel. Testing was initiated on January 7, 1968 and ended one month later on February 7.