Pilot Debrief

SCHEMPP-HIRTH DISCUS 2B near Bishop, CA — 2017-06-22

Final reportGAA17CA368
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Date
2017-06-22
Location
Bishop, CA, USA
Aircraft
SCHEMPP-HIRTH DISCUS 2B
Registration
N21TH
Category
Glider
Highest injury
Minor
Fatalities
0

Probable cause

The pilot’s exceedance of the glider’s critical angle of attack while maneuvering over rising mountainous terrain, which resulted in an aerodynamic stall.

NTSB narrative

The pilot of the glider reported that, while circling over rising mountainous terrain in search of thermals, he approached a "ridge right in front of me [him]." He added that, at that moment, "the [flight] controls went soft [and] I [he] could see that I [he] was [aerodynamically] stalled and plummeting toward the terrain and trees below." He further added that he "pointed the [glider's] nose down at a steep angle" to gain airspeed, but the glider impacted trees and steep terrain. The fuselage and both wings sustained substantial damage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the glider that would have precluded normal operation.

NTSB coding

Evidence available

  • Photos
  • 3 docket documents
View NTSB final reportView NTSB docket

Docket documents3

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