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Atlas / NTSB / WPR25LA198

NTSB CAROL · Event

Event WPR25LA198

2025-06-28 Coolin, Idaho, United States Airport · D28 None 1 aircraft Status: Completed

Registry · N6759K

FAA Aircraft Registry record.

Make / Model

REPUBLIC RC-3

Year of manufacture

1947 · 78 years old at event

Engine

FRANKLIN 6A8 SERIES (215 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19611113

ADS-B equipped

Yes — Mode-S A8F1E8

Registrant of record

COOPER SCOTT H

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot’s failure to maintain control of the airplane and exceedance of the critical angle of attack during takeoff in windy conditions which resulted in a subsequent hard landing.

Factual narrative

The pilot of the amphibious airplane reported that during takeoff from a lake in windy conditions, the airplane encountered windshear, stalled, and landed hard on the water surface, which resulted in the right float to separate. A video of the accident sequence showed the airplane veer right on the water during takeoff from the lake and became airborne. Once airborne, the airplane rolled right and then left before it landed hard on the water. A short time later, the airplane became submerged under the water surface. The right wing was substantially damaged. There were no preaccident mechanical malfunctions or failures 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).

  • Environmental issues-Conditions/weather/phenomena-Wind-Windshear-Effect on operation
  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Lateral/bank control-Attain/maintain not possible
  • Personnel issues-Task performance-Use of equip/info-Use of equip/system-Pilot
  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Angle of attack-Not attained/maintained

Verbatim from NTSB's published report. Source file NTSB_2025_WPR25LA198.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗