Introduction
A flight en route from Tefé to Eirunepé experienced deteriorating weather conditions, prompting the crew to divert to the non-controlled Envira Airport.
Flight Details
The crew conducted a visual approach in heavy rain. The aircraft touched down approximately 500 metres past the runway threshold.
Landing and Overrun
After touchdown, the crew initiated braking procedures. However, the aircraft encountered aquaplaning conditions and was unable to stop within the remaining runway distance. It overran the runway and came to rest 100 metres further in a ravine.
Injuries
The captain sustained serious injuries, the copilot suffered minor injuries, and all 16 passengers escaped uninjured.
Probable Cause
According to the official investigation, the probable cause was that the aircraft suffered aquaplaning after landing and was unable to stop within the remaining distance. Contributing factors included: the operator authorized the crew to divert to an unapproved airport with an aircraft weighing more than the limits specified in the operations manual without performing adequate supervision in the execution of the flight; deviations on part of the crew; lack of crew resource management; lack of crew coordination and communication; lack of crew instruction and training on part of the operator; poor weather conditions with heavy rain; the runway surface was wet and the aircraft suffered aquaplaning; the aircraft was overloaded; the landing was completed with a tailwind component; and the crew failed to perform the approach briefing according to published procedures.