What happened
On June 30, 2007, a Robinson R44 helicopter, registration PP-MJQ, was performing a low-altitude flight over the Araguaia River near Araguaína, Brazil. The aircraft departed from a farm on the riverbanks, carrying the pilot and three passengers, with the intention of flying to Araguaná.
During the flight, the pilot performed low-level maneuvers, flying at an altitude of less than 200 feet above the water. While flying close to the surface, the aircraft collided with the water and subsequently sank. The pilot and all three passengers managed to abandon the aircraft before it submerged and were rescued by local fishermen. The aircraft sustained severe damage and was considered a total loss.
The investigation
CENIPA investigators examined the flight circumstances and reviewed footage captured by another helicopter that was flying alongside PP-MJQ to film the maneuvers. The investigation established that the pilot was flying below the minimum altitude requirements for non-populated areas.
Investigators analyzed the environmental conditions, noting that the sun was low on the horizon. This positioning created a significant glare and a mirror-like reflection on the river's surface, which obscured the pilot's ability to accurately judge the distance between the skids and the water. The investigation also looked into the pilot's decision-making process and the operational context of the flight.
Findings
- Low-altitude maneuvering: The pilot was performing flight maneuvers at an altitude below the 200-foot minimum safety margin.
- Environmental interference: The sun's position and the resulting reflection on the water surface significantly hindered the pilot's depth perception and visibility of obstacles.
- Improper decision-making: The pilot failed to account for the reduced visibility caused by the twilight conditions and the reflective water surface.
- Flight indiscipline: The pilot's actions demonstrated a disregard for established air traffic regulations and safety margins.
- Potential motivational factors: The presence of a second aircraft filming the flight may have influenced the pilot to perform more aggressive maneuvers, reducing the margin of safety.
Safety action
CENIPA issued several safety recommendations to the National Civil Aviation Agency (ANAC), including:
- Strengthening pilot training programs to emphasize compliance with air traffic rules and the risks of operating outside legal limits.
- Incorporating guidance on the proper notification of aeronautical occurrences into operational safety agendas.
- Disseminating the lessons learned from this investigation through seminars and courses to highlight the dangers of assuming unnecessary risks.