Between 2001 and 2006, there were a number of fatal single and
multi-engine aeroplane accidents that occurred, where the ATSB
found that engine power loss during or after takeoff preceded loss
of control. Those accidents involved different aircraft types, all
below 5,700 kg MTOW, and a variety of pilot experience. Partial
power loss, sometimes intermittent, featured in most of the single
engine power loss accidents. ATSB research papers were also
indicating an uncontrolled flight into terrain (UFIT)
problem.
While the ATSB investigated each accident individually, a safety
issue investigation was initiated on 3 July 2006, to enable a
broader look into what may assist the aviation industry to manage
the risk of operating aircraft that don't have assured takeoff
performance when an engine loses power (generally aircraft below
5,700 kg MTOW). Of particular interest was how pilots managed a
partial engine power loss during or soon after takeoff in single
engine aircraft.
The investigation found no significant safety issues that had not
been addressed by developments and changes within the aviation
industry since July 2006. As a result, the safety issues
investigation was discontinued, however the ATSB has initiated an
aviation research project to produce educational material for the
aviation industry on this topic.