MARFA, TX, USA
N9999R
SCHEMPP-HIRTH VENTUS CM
THE PILOT OF THE MOTORIZED GILDER ENCOUNTERED A DOWNDRAFT FROM CONVECTIVE ACTIVITY DURING INITIAL CLIMB OUT FROM THE RUNWAY. THE GILDER WAS CLIMBING AT 150 TO 200 FEET PER MINUTE WAS 100 ABOVE GROUND WHEN IT STARTED TO DESCEND AT 200 FEET PER MINUTE. THE PILOT ATTEMPTED A LANDING IN AN OPEN FIELD, BUT STRUCK A FENCE DURING THE APPROACH. THE GLIDER WAS POWERED BY A TWO STROKE 25HP ENGINE AND WAS OPERATING WITH FULL WATER BALLAST AT MAXIMUM GROSS WEIGHT. THE DENSITY ALTITUDE WS ESTIMATED TO BE 9,000 FEET WHEN THE ACCIDENT OCCURRED. THE PILOT WAS A COMPETITOR IN THE NATIONAL MOTOR GLIDER COMPETITION.
THE PILOT MISJUDGED THE APPROACH. FACTORS WERE THE HIGH DENSITY ALTITUDE, THE DOWNDRAFT, AND THE DTERIORTED CLIMB PERFORMANCE.
Source: NTSB Aviation Accident Database
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