What happened
On March 19, 2012, an Aero Boero AB-115, registration PP-GQJ, was conducting a simulated emergency training flight departing from the Aeroclube do Rio Grande do Sul. The flight, operated by Aeroclube do Rio Grande do Sul, carried an instructor and a student pilot.
During the execution of a simulated engine failure procedure, the crew initiated an air arremetida (go-around/maneuver) at an altitude of 300 feet. During this phase, the crew was unable to maintain the aircraft's flight attitude, leading to a collision with overhead electrical power lines. Following the impact with the wires, the instructor performed an emergency landing in an off-field area. While the landing was successful, the aircraft struck a ditch during the process.
The investigation
CENIPA's investigation focused on the sequence of events during the training maneuver and the mechanical state of the aircraft. Investigators verified that the aircraft's airworthiness certificate was valid and that the weight and balance were within limits. Maintenance records for the airframe, engine, and propeller were found to be up to date. Additionally, a recent engine overhaul performed in May 2012 was reviewed, and no evidence was found to suggest that engine failure contributed to the accident. The investigation also confirmed that the instructor and student held valid medical and technical certifications.
Findings
- The primary cause of the accident was the inability to maintain the aircraft's flight attitude during a simulated engine failure maneuver.
- The collision with the electrical network resulted in damage to the power lines.
- The aircraft sustained significant damage to the engine, propeller blades, landing gear, fuselage, and the right wing tip.
- Both occupants of the Aero Boero AB-115 escaped the accident uninjured.