NTSB CAROL · Event
Event GAA17CA465
Registry · N777NG
FAA Aircraft Registry record.
Make / Model
CZECH AIRCRAFT WORKS SPOL SRO SPORTCRUISER
Year of manufacture
2007 · 10 years old at event
Engine
ROTAX 912S (100 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20071101
ADS-B equipped
Yes — Mode-S AA843B
Registrant of record
N M G AVIATION LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The physical interference of the student pilot’s headset control unit with the canopy, which prevented the canopy latches from seating properly and resulted in the canopy opening in flight and the subsequent hard landing.
Factual narrative
The student pilot reported that he had departed with the intent to perform touch-and-go takeoffs and landings. After takeoff, he realized that the canopy was not latched. He struggled to maintain airplane control in the pattern, but he was able to land normally. The student pilot then checked the latch handle and he believed that he had secured the canopy correctly. He took off and flew one pattern but just prior to landing, the canopy opened and obstructed the pilot's view of the runway. The airplane landed hard and bounced, and the pilot aborted the landing. The student pilot flew a third pattern and made an approach over the runway centerline, "slightly above stall airspeed." The airplane landed hard on the runway and the right main landing gear and the nose landing gear separated from the airplane. The airplane skidded to a stop on the runway. The airplane sustained substantial damage to the right main landing gear attachment points and the right-wing spar. The student pilot asserted that the canopy latch was down during the takeoffs, but was not seated correctly. For the latch to seat correctly, "the canopy itself needed to be pushed up so that gravity seated the canopy." The airplane was equipped with a full-width clear canopy, hinged in the front, and tipped forward for entry to the cockpit. The manually operated canopy was closed by the pilot reaching above their head and grabbing the handle identified by the manufacturer's illustrated parts catalogue as SF0730N. Per the photographs provided by Federal Aviation Administration (FAA)Aviation Safety Inspectors, the handle was not installed on the canopy. The canopy security latches consisted of two metal, claw-type, latches that were mechanically moved forward to secure the canopy to the fuselage. The canopy latches are moved forward to the secure position when the pilot lowers the canopy "T" handle. The "T" handle is affixed to the baggage compartment front wall in the cockpit, between the left and right seats just above the arm rest and just below the pilot headset audio input jacks. The student pilot's head set control unit was about 4 inches long by 1 inch in diameter. Photographs taken shortly after the accident and provided by FAA Inspectors revealed that control unit was lodged underneath the "T" handle. The student pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The student pilot reported that he had departed with the intent to perform touch-and-go takeoffs and landings. After takeoff, he realized that the canopy was not latched. He struggled to maintain airplane control in the pattern, but he was able to land normally. The student pilot then checked the latch handle, and he believed that he had secured the canopy correctly. He took off and flew one pattern but just before landing, the canopy opened and obstructed the pilot's view of the runway. The airplane landed hard and bounced, and the pilot aborted the landing. The student pilot flew a third pattern and made an approach over the runway centerline, "slightly above stall airspeed." The airplane landed hard on the runway, and the right main landing gear (MLG) and the nose landing gear separated from the airplane. The airplane skidded to a stop on the runway. The airplane sustained substantial damage to the right MLG attachment points and the right-wing spar. The student pilot asserted that the canopy latch was down during the takeoffs but was not seated correctly. For the latch to seat correctly, "the canopy itself needed to be pushed up so that gravity seated the canopy." The airplane was equipped with a full-width clear canopy, hinged in the front and tipped forward for entry to the cockpit. The manually operated canopy was supposed to be closed by the pilot by reaching above their head and grabbing the handle identified by the manufacturer's illustrated parts catalogue as SF0730N. Per the photographs provided by Federal Aviation Administration (FAA) aviation safety inspectors, the handle was not installed on the canopy. The canopy security latches consisted of two metal claw-type latches that were mechanically moved forward to secure the canopy to the fuselage. The canopy latches were moved forward to the secure position when the pilot lowered the canopy "T" handle. The "T" handle was affixed to the baggage compartment front wall in the cockpit between the left and right seats just above the arm rest and just below the pilot headset audio input jacks. The student pilot's head set control unit was about 4 inches long by 1 inch in diameter. Photographs taken shortly after the accident and provided by FAA inspectors revealed that the control unit was lodged underneath the "T" handle. The student pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane 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 Environmental issues-Task environment-Physical workspace-Access to equipment/controls-Effect on operation - C
- C Aircraft-Aircraft systems-Communications system-Interphone-Unintentional use/operation - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Student/instructed pilot - C
Verbatim from NTSB's published report. Source file
NTSB_2017_GAA17CA465.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 (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.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- arXiv 2023 · arXiv preprint
Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
- arXiv 2022 · arXiv preprint
Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due…
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER)
Analysis on the Negative Emotional, Physiological, and Cognitive Responses Elicited from of the Activation of a Stall Alarm
Failing to identify an aerodynamic stall can lead to the inability of an aircraft to sustain flight. To warn pilots of an impending or fully-developed stall, many aircraft have safety devices installe…
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