Aviation Accident Summaries

Aviation Accident Summary BFO93LA108

CHESTER, VT, USA

Aircraft #1

N164SS

Burkhart Grob SPEED ASTIR II

Analysis

THE PILOT REPORTED THAT HE ATTEMPTED TO RETURN TO THE AIRPORT AFTER A LOCAL SOARING FLIGHT. HE ENCOUNTERED A 'SUDDEN HEAVY SINK' AND IMPACTED TREES NEAR A FIELD LOCATED ABOUT TWO MILES FROM THE AIRPORT.

Factual Information

On July 4, 1993, about 1300 hours eastern daylight time, N164SS, a Grob Speed Astir II glider, registered to Louis Groundal, Newtown, Connecticut, was destroyed after impacting trees during landing near Chester, Vermont. The certificated private pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed and a flight plan was not filed. The local personal flight originated from Springfield, Vermont, and was conducted under 14 CFR 91. According to the pilot; "After about one hour of soaring, attempts to return to airport to land [were] hampered by sudden heavy sink. Terrain consisted of trees and [lacked] appropriate off field landing sites, except a pond and one small very rough field (1.5 to 2 miles from airport). Attempted to land glider in field, but on final approach heavy sink put glider in a tree near the edge of the field." No mechanical malfunctions were reported.

Probable Cause and Findings

THE PILOT'S INADEQUATE INFLIGHT PLANNING AND AN IN FLIGHT ENCOUNTER WITH A DOWNDRAFT WHILE ON FINAL APPROACH.

 

Source: NTSB Aviation Accident Database

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