What happened
On November 26, 2000, an EMB 711 C, registration PT-NHL, was performing a VFR repositioning flight from Araranguá, SC, to Concórdia, SC. During the flight, the aircraft encountered severe weather conditions, including heavy Cumulus Nimbus clouds, thunderstorms, and strong gusty winds.
As the aircraft traversed a mountainous area, the pilot attempted to descend to find visual conditions or perhaps to perform a precautionary emergency landing. However, the pilot and the aircraft were not rated or equipped for Instrument Flight Rules (IFR). During this descent, the aircraft entered instrument conditions and likely entered an abnormal attitude. Witnesses observed the aircraft emerging from the clouds in a descending spiral. The aircraft suffered severe structural failure, including the loss of a wing, before impacting the ground violently. The crash resulted in four fatalities, including the pilot and three passengers.
The investigation
CENIPA's investigation focused on the pilot's decision-making and the operational legality of the flight. The investigation established that the pilot held a valid private pilot license and was qualified for VFR operations, but lacked the necessary instrument rating. Furthermore, the EMB 711 C was not certified for IFR operations.
Investigators examined the meteorological conditions, which featured 8/8 cloud coverage below 1,000 feet. The investigation also looked into the pilot's planning, noting a lack of weather information regarding the route, destination, and alternate aerodromes. The analysis concluded that the pilot's attempt to penetrate the cloud layer led to spatial disorientation and structural overstress.