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Atlas / NTSB / GAA20CA058

NTSB CAROL · Event

Event GAA20CA058

2019-10-27 Enumclaw, Washington, United States Airport · WN76 None 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

The pilot's failure to maintain a proper glidepath, which resulted in a collision with trees.

Factual narrative

The glider pilot reported that, after soaring atop local ridgelines, he initiated an approach. During final, the pilot put the airplane in a slip to lose altitude and intercept an "appropriate glideslope." However, the glider's right wing collided with treetops and the glider came to rest inverted. The airplane sustained substantial damage to the right wing and fuselage. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot reported that, after soaring atop ridgelines in a glider, he initiated an approach. During final, the pilot put the glider in a slip to lose altitude and intercept an "appropriate glideslope." However, the right wing impacted treetops and then came to rest inverted. The glider sustained substantial damage to the right wing and fuselage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the glider that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Descent/approach/glide path-Not attained/maintained - C
  • C Environmental issues-Physical environment-Object/animal/substance-Tree(s)-Effect on operation - C

Verbatim from NTSB's published report. Source file NTSB_2019_GAA20CA058.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.