What happened
On September 13, 2011, a Hawker Beechcraft G-58, registration PP-KST, departed from Maringá Aerodrome (SBMG) bound for Fazenda Fortaleza do Guaporé (SSDP). The flight was operated by a private operator and carried one pilot and two passengers. During the climb to 10,000 feet, the aircraft crossed the 289 radial, 41NM from the LON VOR.
At approximately 11:31 UTC, the pilot established contact with Londrina Approach (APP-LO) to report the flight progress. However, shortly after, the aircraft entered a flat spin. Witnesses near the crash site reported seeing the aircraft spinning on its axis in a horizontal attitude, with visible fluid leaking from the wingtips. The aircraft eventually impacted the ground near the municipality of Ângulo, Paraná. The impact resulted in three fatalities (the pilot and both passengers) and severe damage to the airframe, engines, propellers, and wings.
The investigation
CENIPA's investigation focused on the sequence of events leading to the loss of control. Investigators analyzed the aircraft's flight data from the Garmin Aera 500, wreckage distribution, and witness testimonies. The investigation examined the pilot's training background, the aircraft's weight and balance, and the technical complexity of the cockpit instrumentation.
Investigators found that the aircraft was operating above its maximum takeoff weight (MTOW). Analysis of the wreckage showed that the landing gear and flaps were extended, suggesting the pilot may have attempted to use these controls to mitigate the spin or minimize the impact. The investigation also looked into the pilot's training, noting that his instruction for the Garmin G1000 system was informal rather than through a standardized flight school curriculum.