ASN Wikibase Occurrence # 200316
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| Date: | Thursday 22 June 2017 |
| Time: | 13:00 |
| Type: |  Schempp-Hirth Discus 2B |
| Owner/operator: | BAY AREA SOARING ASSOCIATES INC. |
| Registration: | N21TH |
| MSN: | 91 |
| Year of manufacture: | 2001 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | 30 mile from BISHOP, CA (BIH) -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Bishop, CA (BIH) |
| Bishop, CA (BIH) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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.
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.
Accident investigation:
 |
|
Sources:
NTSB
https://flightaware.com/resources/registration/N21TH
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Oct-2017 19:04 | bubu | Added |
| 26-Oct-2017 19:50 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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