Aviation Accident Summaries

Aviation Accident Summary NYC97LA108

PEPPERELL, MA, USA

Aircraft #1

N17976

Schweizer SGS 135

Analysis

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.

Factual Information

On June 8, 1997, about 1605 eastern daylight time, a Schweizer SGS 135, a glider, N17976, was substantially damaged during an uncontrolled descent into a river, while maneuvering on final approach to the Pepperell Airport (MA09), Pepperell, Massachusetts. The certificated private pilot sustained serious injuries. Visual meteorological conditions prevailed for the personal flight that originated at MA09, about 1530. No flight plan had been filed for the flight conducted under 14 CFR Part 91. In the NTSB Form 6120.1/2, the pilot stated that she had intended to fly a local flight and return to MA09. After 30 minutes of flying, she entered a left traffic pattern for landing on runway 24, at MA09. She further stated: "...I was high on my turn to final, I assessed traffic, and proceeded to complete a 360 [degree] turn to lose excess altitude. As I turned onto final, the second time, the left wing of the glider stalled and induced a spin to the left from about 300 ft. AGL. The glider crashed into the Nashua River..." The winds at an airport, 6 miles northeast of MA09, were reported from 150 degrees at 10 knots. The pilot had accumulated 109 hours of total flying experience, of which 70 hours were as pilot in command, and 3 1/2 hours in make and model.

Probable Cause and Findings

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

 

Source: NTSB Aviation Accident Database

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