SAN MARCOS, TX, USA
N7PZ
QUESTAIR VENTURE
THE PRIVATE PILOT WAS PERFORMING A MAINTENANCE TEST FLIGHT IN THE TRAFFIC PATTERN OF HIS HOME BASE AIRPORT IN HIS EXPERIMENTAL AIRPLANE. AFTER DEPARTING FROM THE RUNWAY, THE AIRPLANE WAS OBSERVED IN A LEFT TURN ON BASE TO FINAL APPROACH. EYEWITNESSES STATED THAT THE AIRPLANE CONTINUED TO BANK LEFT AND TIGHTENED THE TURN BEFORE IT NOSED OVER OUT OF CONTROL TO IMPACT THE GROUND. SEVERAL WITNESSES MONITORED AN EXEMPLAR FLIGHT DURING THE INVESTIGATION AND NOTED THAT THE ACCIDENT AIRPLANE APPEARED TO BE SLOWER IN THE PATTERN COMPARED TO THE DEMONSTRATION AIRPLANE. NO MECHANICAL ANOMALIES WERE FOUND TO ANY AIRPLANE SYSTEM DURING THE INVESTIGATION BY THE FAA COORDINATOR.
THE PILOT'S FAILURE TO MAINTAIN FLYING AIRSPEED RESULTING IN A STALL.
Source: NTSB Aviation Accident Database
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