NTSB CAROL · Event
Event WPR17LA154
Aircraft involved
Probable cause & findings
The pilot’s loss of directional control during landing.
Factual narrative
On July 13, 2017, about 2015 mountain standard time, a Beech D55 twin-engine airplane, N1796A, was substantially damaged when it was involved in an accident near Hailey, Idaho. The pilot and passenger were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that, just before he entered the landing flare, he realized that his engines were "not synced up" and the airplane began to drift to the right of the runway. The pilot then realized that the airplane was getting too slow, and he increased the power to the left engine and pitched the airplane's nose down. The airplane yawed to the right and the right wingtip impacted the ground. The airplane hit the ground sideways, and the landing gear collapsed, resulting in substantial damage. The airplane slid off the runway and came to rest upright. The pilot reported that there were no mechanical problems with the airplane. The pilot reported that the multi-engine airplane's engines were "not synched up" during the landing flare and the airplane began to drift to the right side of the runway. The airplane's airspeed began to decay, and the pilot applied left throttle and pitched the airplane's nose down to correct. The airplane subsequently yawed to the right, the right-wing tip impacted the ground, and the airplane landed sideways, collapsing the landing gear and resulting in substantial damage. The pilot reported that there were no mechanical problems that would have precluded normal operation and that he should have initiated a go-around upon first noticing the unequal engine power. 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).
- — Aircraft-Aircraft power plant-Engine controls-Power lever-Incorrect use/operation
- — Personnel issues-Action/decision-Action-Incorrect action selection-Pilot
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained
- — Personnel issues-Task performance-Use of equip/info-Use of equip/system-Pilot
Verbatim from NTSB's published report. Source file
NTSB_2017_WPR17LA154.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (icing, go-around). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2026 · Contractor Report (CR)
Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint
Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- NASA NTRS 2025 · Conference Paper
A Training Study to Improve Monitoring During A Go-Around
As part of an FAA program to improve go-around (GA) safety, we were asked to determine if we could improve the performance of the Pilot Monitoring (PM) during a GA maneuver.
- NASA NTRS 2025 · Presentation
NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- arXiv 2024 · arXiv preprint
An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…
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