According to CENIPA, 31 occurrences were recorded in the country in 2013, an increase of 181% when compared to 2009.
Research published by the Australian authority Australian Transport Safety Bureau (ATSB, 2004), similar to CENIPA, described that there are a number of factors that contribute to the distraction of the pilot.
According to CENIPA Final Reports (BRASIL, 2008c; BRASIL, 2009), which showed that in both accidents the pilots died in the crash site in the midst of the hardware, the analysis of the medical aspect showed the pilots either suffered from hypertension and obesity and/or fatigue; moreover, one of them used medication restricted for air activity.
While the reason for the sudden loss of the transponder remains undetermined, Brazilian investigation agency Centro de Investigacao e Prevencao de Acidentes Aeronauticos (CENIPA
) has drawn up a [sup.3]most likely[sup.2] scenario after analysing five possible sets of circumstances.