NTSB Identification: NYC97LA108.
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Accident occurred Sunday, June 08, 1997 in PEPPERELL, MA
Probable Cause Approval Date: 04/10/1998
Aircraft: Schweizer SGS 135, registration: N17976
Injuries: 1 Serious.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

After 30 minutes of flying on a local flight, the pilot/owner of the glider entered a left traffic pattern for landing on runway 24 at the departure airport. The pilot determined that she was too high on final approach, and initiated a 360-degree turn to lose altitude. The pilot stated that during the turn to final, the left wing of the glider stalled. This induced a spin to the left at 300 feet, and the glider descended into a river. Winds at an airport 6 miles northeast were reported from 150 degrees at 10 knots.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The pilot's failure to maintain airspeed during a turn, which resulted in an inadvertent stall and subsequent uncontrolled descent into water.

Full narrative available

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