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ASN Wikibase Occurrence # 29427
Last updated: 24 February 2021
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Type:Silhouette image of generic ask1 model; specific model in this crash may look slightly different
Schleicher ASK 21
Registration: N341KS
C/n / msn: 21252
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Location:Woodstock, VA -   United States of America
Phase: En route
Departure airport:Front Royal, VA (FRR)
Destination airport:
Investigating agency: NTSB
After being released from the tow plane, the pilot flew the glider for about 10 miles along a ridge. According to the pilot, he failed to recognize that the wind speed necessary to generate sufficient orographic lift had diminished, and also failed to execute a turn toward the valley while he had sufficient altitude to clear the terrain. As he executed a turn "into very weak ridge lift," the glider stalled, and mushed into trees. The pilot reported that his evaluation of the weather conditions prior to his departure predicted "good orographic lift" in the area. He also reported no mechanical deficiencies with the glider.
Probable Cause: The pilot's failure to recognize the loss of orographic lift conditions. A factor was the loss of orographic lift.



Revision history:

27-Sep-2008 01:00 ASN archive Added
24-Jun-2009 10:28 DColclasure Updated
21-Dec-2016 19:16 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Dec-2016 19:20 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
09-Dec-2017 16:48 ASN Update Bot Updated [Nature, Departure airport, Source, Narrative]

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