NTSB Identification: NYC07CA118.
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Accident occurred Sunday, May 13, 2007 in Franconia, NH
Probable Cause Approval Date: 06/27/2007
Aircraft: Burkhart Grob Flugzeugbau G103, registration: N39783
Injuries: 2 Minor.
NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.
After about 2.5 hours of soaring in the Burkhart Grob Flugzeugbau G-103 glider, the pilot returned to the airport and entered the traffic pattern at 1,200 feet with a "small amount" of spoilers deployed. He turned onto the downwind leg at 800 feet, and used "more spoilers" to descend to 500 feet. He then turned onto the base leg, and at 300 feet and 60 knots airspeed, he turned onto the final leg of the approach and aligned the glider with the runway. He immediately felt the glider had entered rising air, so he performed a full slip with the spoilers deployed; however, the glider did not descend significantly. The pilot waited for the glider to exit the rising air mass, and it continued to descend moderately until about mid-field, when it descended rapidly. The glider touched down about 3/4 down the runway and bounced back into the air. Due to a pile of debris at the end of the runway, the pilot elected to close the spoilers, overfly the debris, and land the glider in the treetops ahead at a slow speed. Before he could accomplish his plan, a crosswind blew the glider towards a tree. The left wing contacted the tree, and the glider subsequently impacted the ground.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's failure to obtain the proper touchdown point. A factor in the accident was an encounter with an updraft while on approach. Full narrative available
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