Date: Monday 22 January 2018
Time:
12:14
Van's RV-12
Owner/operator: Private
Registration: N262WS
MSN: 120262
Year of manufacture: 2011
Total airframe hrs: 95 hours
Engine model: Rotax 912 ULS
Fatalities: Fatalities: 1 / Occupants: 1
Other fatalities: 0
Aircraft damage: Destroyed
Category: Accident
Location: Lee County, Bonita Springs, FL - United States of America
Phase: En route
Nature: Private
Departure airport: Fort Myers, FL (FMY)
Destination airport: Everglades City, FL (X01)
Investigating agency: NTSB
A sport pilot departed on a VFR cross-country flight under clear weather conditions, climbing to 2,500 ft. During the flight, the pilot missed or failed to respond to multiple radio calls from air traffic control, deviated from assigned altitudes, and used incorrect radio terminology. Data from the airplane indicated that the pilot frequently flew at speeds above the plane's maximum structural cruise speed of 108 knots. About 4 minutes before the crash, the pilot began descending towards the destination airport. After acknowledging nearby traffic, the airplane's pitch increased slightly before sharply diving nose-down with a right roll. The pilot transmitted a "mayday" call as the roll continued, with the airspeed rising to 169 knots, 33 knots over the plane's safety limit. Engine speed also fluctuated beyond redline limits.
The airplane's left wing failed in-flight due to overload, breaking off and striking the canopy as the plane exceeded its redline speed during the descent. There were no signs of mechanical malfunctions or pre-existing issues with the airplane.
The pilot lacked a required FAA medical certificate, although not mandatory for sport pilots. His medical records showed diagnoses of hypertension, sleep apnea, depression, PTSD, and other conditions. The autopsy revealed significant coronary artery disease, although it’s unclear if a cardiac event contributed to the accident. Toxicology tests found multiple psychoactive medications in the pilot's system, but their specific effects at the time of the accident are unknown.
The pilot’s heart condition and psychiatric disorders likely contributed to distraction or unsafe maneuvering. His mental state, potentially worsened by unreported psychiatric conditions and medications, along with no mechanical or weather-related issues, suggests his health led to the unsafe maneuvers that exceeded the aircraft’s limitations, causing the wing to fail mid-flight.
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