Learjet 55 Spatial Disorientation Clues & Wrong-Runway Landings

Max Trescott and Rob Mark examine several recent aviation accidents and NTSB reports involving runway hazards, spatial disorientation, single-engine training, inadequate briefings, and wrong-runway landings.

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The episode opens with an unusual Cirrus Vision Jet accident at Driggs-Reed Memorial Airport in Idaho on August 11, 2026. Construction had shortened the available portion of Runway 4 while crews repaired a water pipe beneath the runway. A trench had been dug across the closed section, and a replacement pipe was positioned above the runway.

Despite a NOTAM identifying the closure, the locally based Vision Jet began its takeoff from the normal end of Runway 4 rather than entering farther down at the temporary runway entrance. During the takeoff roll, the aircraft struck the elevated pipe, severing landing gear components. Remarkably, the Vision Jet crossed the trench and came down on the other side. Both occupants were injured.

Max and Rob discuss one of the investigation’s central questions: why would a pilot apparently familiar with the airport and its construction attempt to take off on a closed portion of the runway?

Next is the fatal collision at Carlisle Airport in Pennsylvania between a Cessna 150 and a Pennsylvania State Police Bell 407 helicopter. The helicopter was hovering only a few feet above the ground alongside the runway during a training mission when the approaching Cessna struck it from behind. The airplane reportedly contacted the helicopter’s tail rotor and then its main rotor system before breaking apart. The Cessna pilot was killed. Early information leaves important questions unanswered, including whether the airplane was still airborne at impact and whether either crew was aware of the other aircraft.

Rob then examines the January 4, 2026 crash of Cessna 172 N9360E at Provincetown, Massachusetts. After initially finding Provincetown temporarily closed for snow removal, the pilot flew elsewhere before returning. Surveillance video showed the airplane crossing the threshold low, climbing slightly, and then descending sharply into the runway. ADS-B data showed approximately 80 knots at 75 feet shortly before impact, leaving unanswered questions about what led to the unusually hard runway contact.

The centerpiece of the episode is Max’s analysis of newly released NTSB docket material concerning the January 31, 2025 crash of Learjet 55 XA-UCI shortly after departure from Northeast Philadelphia Airport.

The air ambulance flight entered a roughly 400-foot overcast shortly after takeoff. ADS-B data show the Learjet initially banking right as instructed before gradually rolling left. Particularly significant is the extremely slow roll rate—about two degrees per second for roughly 20 to 25 seconds.

The NTSB’s human-performance material discusses somatogyral illusion, in which sufficiently slow angular motion may go undetected by the inner ear. A pilot can therefore feel as though the airplane remains straight and level while the actual bank angle steadily increases.

The timing also raises questions about workload and distraction. The developing loss of control coincided closely with the transition from tower to departure control as the Learjet entered the clouds. The airplane eventually exceeded 90 degrees of left bank, descended at nearly 10,000 feet per minute, and reached approximately 300 knots.

Another possible factor is somatogravic illusion. Investigators calculated that acceleration forces near the end of the flight could have created the sensation of being pitched dramatically upward even while the Learjet was actually pointed down.

Both engines appeared to be operating at approximately takeoff power, making an engine failure less likely. Investigators also found an unexpected pitch-trim position, although there was no evidence that the trim system had mechanically failed. Because the cockpit voice recorder was not recording the accident flight and there was no flight data recorder, major questions remain unanswered. The NTSB has not yet issued a probable cause.

The final reports provide several additional lessons. During a simulated single-engine approach in N1850N a Beechcraft Duchess at Snohomish, Washington, a pilot attempted a low-altitude go-around using only the operating engine. The airplane turned aggressively and struck a hangar. Both pilots survived.

Another extraordinary accident involved glider N8217W in Virginia. A photographer positioned near a taxiway to photograph his friend aboard the arriving glider was struck by the wing and fatally injured. The accident illustrates how the enormous wingspan of a glider can create a visual trap for someone concentrating on the fuselage or looking through a camera.

Finally, Rob examines two wrong-runway landings near Chicago: N1128M Learjet 60 at Chicago Executive Airport and N772MR (Envoy 3936) ERJ-170 at Chicago O’Hare.

Despite very different circumstances, both illustrate continuation bias—the tendency to continue with an established mental plan even as evidence accumulates that the plan is wrong. In the O’Hare incident, investigators also criticized air traffic control because a controller recognized the airplane was aligned with the wrong runway but allowed it to land there rather than alerting the crew.

Together, these accidents reinforce one recurring lesson: pilots must continually challenge their own assumptions, particularly when workload is high and everything seems to be unfolding according to plan.