The pilot of a Cessna was killed at Coonabarabran after striking a powerline during an intentional low-level pass according to an ATSB investigation report.
C172 VH-REU was being flown on a session of circuits at Coonabarabran in April last year, when the pilot deviated from the usual flight path and flew over a tractor in an adjacent paddock at a height estimated to be 15-25 feet AGL.
The aircraft stuck a power line and crashed into the ground. The pilot was not wearing the shoulder harness, to which the ATSB attributes the fatal injuries.
During the investigation, the ATSB determined that the pilot did not have a low-level rating as required by CASA, and that the flight path over the tractor deviated from the circuit, indicating the low pass was intentional.
“Operations at low height expose an aircraft to several hazards like powerlines, which are typically very difficult to see and present a critical hazard to any low-flying aircraft,” said ATSB director Dr Mike Walker.
“Even with appropriate training, flying at low-level carries a significant risk and should be avoided when there is no operational reason.
“For most private pilots, there is generally no reason to fly at low levels, except during take-off and landing, or conducting a forced or precautionary landing.”
Investigations showed that the liveable space in the cockpit was maintained during impact and that the pilot's seat tracks and seat were secured, but the shoulder harness was still stowed.
However, the ATSB was not bale to positively determine whether, if worn, the shoulder harness would have reduced the severity of injuries.
“Nonetheless, pilots should always wear upper torso restraints where available,” Dr Walker said. “Research has shown that wearing an upper torso restraint significantly reduces the risk of serious or fatal injury.”
The full investigation report is on the ATSB website.