What happened
On April 5, 2015, an Aero Boero AB-115, registration PP-GAA, departed from Bacacheri Aerodrome (SBBI) in Curitiba, Brazil, for a primary flight instruction mission. The crew, consisting of an instructor and a student, intended to operate within the R595 training area.
Approximately 20 minutes into the flight, the crew encountered deteriorating meteorological conditions, including increasing cloud cover and rain, which significantly restricted visibility. Realizing that returning to Bacacheri or reaching alternative aerodromes was no longer possible under visual flight rules, the instructor decided to perform a controlled landing in a nearby field used for simulated engine failure training. The landing site was an unprepared area characterized by high grass and ground irregularities, including nearby fences. During the landing roll, the main landing gear became trapped in the tall grass, causing the aircraft to capsize. The aircraft sustained substantial damage, but both occupants escaped without injury.
The investigation
The CENIPA investigation established that although METAR and TAF reports for the local aerodromes indicated visual conditions, light rain was actually occurring at the aerodrome during pre-flight procedures. This weather prompted seven other scheduled flights that day to be aborted, while the crew of PP-GAA proceeded with the mission.
Investigators also found that the aircraft was operating above its maximum takeoff weight. At departure, the aircraft weighed 804 kg, exceeding the established maximum takeoff weight of 770 kg; at the time of the accident, the weight was 795 kg. Furthermore, the investigation identified a lack of effective operational supervision at the flight club, which failed to intervene or properly evaluate the meteorological risks and weight limitations.
Findings
- Adverse meteorological conditions that restricted visibility.
- Errors in pilot judgment regarding the decision to proceed despite local weather trends.
- Inadequate flight planning, specifically regarding weather assessment and weight management.
- Operating the aircraft above the maximum takeoff weight.
- Ineffective management supervision regarding operational oversight and safety monitoring.