What happened
On October 1, 2020, at approximately 20:08 UTC, a Beechcraft 95-C55, registration PS-RAD, was performing a private local flight from the Arthur Siqueira State Aerodrome (SBBP) in Bragan to Bragança Paulista, Brazil. The flight involved a pilot and one passenger.
The flight sequence began with an initial takeoff attempt and a subsequent return to the airfield because one of the aircraft doors was found to be open. Following the landing to secure the door, the crew attempted a second takeoff. Shortly after leaving the ground, the aircraft experienced a loss of control and struck the terrain. The impact resulted in substantial damage to the aircraft, while both the pilot and the passenger sustained minor injuries.
The investigation
CENIPA investigators examined the aircraft's technical status and the flight conditions. The pilot held valid multi-engine and instrument ratings, and the aircraft possessed a valid airworthiness certificate. Meteorological reports indicated favorable conditions, with visibility exceeding 10 km and light winds.
During the investigation, several discrepancies were noted regarding aircraft configuration. The propeller levers were found to be asymmetric and not set to the 2,200 RPM recommended by the manufacturer for takeoff. Additionally, the flap lever was in an intermediate position, though the indicator showed the flaps were up. While the pilot reported a potential engine failure, investigators could not definitively confirm this because the aircraft was moved from the investigation site by a new owner without authorization, preventing a thorough engine analysis.
Analysis of video footage showed the aircraft traveled approximately 400 meters down the 1,200-meter runway before rotation, reaching a speed of 64 knots. The pilot was unable to provide specific rotation or indicated airspeed data at the time of liftoff.
Findings
- The aircraft was operating within weight and balance limits.
- The propeller levers and flap settings were inconsistent with manufacturer takeoff procedures.
- Improper execution of takeoff checklists may have led to reduced engine performance due to incorrect propeller settings.
- There was a possibility of a pilot error in judgment regarding the rotation speed during the second takeoff attempt.