Photos shared with AVweb show the Cobalt Co50 Valkyrie undergoing flight testing at Hayward Executive Airport (KHWD) this summer before a test flight setback at Castle Airport (KMER) sidelined the newer of Cobalt’s two test aircraft. According to the NTSB preliminary report, after determining that the ailerons were not effective, the ATP-rated test pilot “reasoned that he would be able to land the airplane while configured at an increased airspeed using steady thrust control and the rudder for directional control.”
Source: avwebValkyrie Continues After Testing Mishap