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Phase of Flight
Figure 26 shows the distribution of accidents and serious incidents per phase of flight. Most accidents and se‑
rious incidents occur in the Manoeuvring phase. This is not surprising due to the manner in which many Aerial
Work operations are conducted. Typical examples of these operations are powerline inspections, external load
operations and animal herding, all of which are predominantly performed in the Manoeuvring phase and close
to the operational limits of the aircraft. It again highlights the importance of developing Safety Risk Portfolios
for each sector in order to identify the specific risk areas and safety issues.
´
´
Figure 26:
Aerial work helicopter percentage of accidents and serious incidents 2005-2014
per phase of flight
%
%
%
%
%
%
%
Standing
Taxi
Take-o
En route
Manoeuvring
Approach
Landing
Propulsion Type
Figure 27 shows the number of accidents per propulsion type. The majority (72%) of accidents that occurred in‑
volved turboshaft‑powered helicopters. This is in line with the types of helicopters used when performing aerial
work operations.