NTSB CAROL · Event
Event CEN16LA177
Aircraft involved
Probable cause & findings
A partial loss of engine power for reasons that could not be determined based on the available information.
Factual narrative
On April 28, 2016, about 1510 central daylight time, a Boeing A75N1 (PT-17) single-engine airplane, N17PY, impacted terrain after a loss of engine power shortly after departing the Osage City Municipal Airport (53K), Osage City, Kansas. The pilot and two passengers were not injured, and the airplane was substantially damaged. The airplane was registered to, and operated by a private individual, as a 14 Code of Federal Regulations Part 91 sport parachuting flight. Visual meteorological conditions (VMC) prevailed and a flight plan had not been filed. At the time of the accident the airplane had just departed 53K for the skydiving flight .The airplane departed with the pilot seated in the rear cockpit and with two parachutists standing outside, on the lower wing. The parachutists held on to the edge of the front cockpit and were secured by a safety strap. .After the airplane climbed to about 200 ft agl (above ground level), the pilot sensed a loss of engine power and the airplane stopped climbing. The airplane descended and the pilot executed an off-airport forced landing to a flat open field about 1,600 feet north of 53K. The airplane cleared the top of 32-foot tall electric power lines and came to rest upright, about 100 feet from the initial touchdown spot. The airplane landed hard with the muddy field resulted in the complete separation of both main landing gear legs . The two parachutists reported that they were not ejected and remained restrained by the safety strap. A postaccident examination of the airplane at the scene revealed that there was substantial damage to the lower wing and fuselage. The examination noted that there was adequate fuel on board, no fuel spill, and no postimpact fire. Flight control continuity was confirmed. The pilot said he did not use carburetor heat . An examination of the engine and its components showed no anomalies. An inspection and testing of the engine spark plugs indicated normal wear and that they were fully functional. The wiring harness was visually inspected and appeared normal. A bench test of both magnetos showed they were fully functional. The closest weather reporting station was at FOE, Topeka, Kansas; located 20 miles northeast from the accident location, At 1453 the automated surface observation system at FOE recorded wind from 330 degrees at 13 knots, visibility 10 miles, scattered clouds at 2,700 ft above ground level, temperature 16 ° Celsius (C), dew point 8 ° C, and an altimeter setting of 29.96 inches of Mercury. A review of the carburetor icing probability chart in Federal Aviation Administration, Special Information Bulletin CE-09-35, revealed the airplane was operating in an area favorable for serious icing at glide power. The airplane departed on a parachute jump flight with the airline transport pilot seated in the rear cockpit and two parachutists standing outside on the lower wing. About 200 ft above ground level, the pilot sensed a loss of engine power and the airplane stopped climbing. The airplane descended, and the pilot conducted an off-airport forced landing to a flat, open, muddy field about 1,600 ft north of the airport, during which the main landing gear separated from the airframe. A postaccident examination of the airplane revealed no anomalies. Review of weather information for the area at the time of the accident indicated that conditions were conducive to the accumulation of serious icing at glide power settings; however, the airplane was operating at takeoff power at the time of the accident, and the reason for the loss of engine power could not be determined. 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 Not determined-Not determined-(general)-(general)-Unknown/Not determined - C
- F Aircraft-Aircraft power plant-Engine (reciprocating)-(general)-Damaged/degraded - F
- — Aircraft-Aircraft systems-Ice/rain protection system-Intake anti-ice, deice-Not used/operated
Verbatim from NTSB's published report. Source file
NTSB_2016_CEN16LA177.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). 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 · 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…
- NASA NTRS 2024 · Presentation
NASA Icing Update – Oct 2024
This presentation provides a status update on select NASA icing research activities for the SAE AC-9C Icing Technical Committee Meeting on Oct 21, 2024.
Browse the full corpus — academia portal ↗