There has been a significant increase in the number of birdstrike incidents over the past two years involving high capacity aircraft operations, new figure show.
The findings were part of an Australian Transport Safety Bureau (ATSB) report into birdstrike events recorded over the past 10 years.
The report said there were 16,069 birdstrikes reported to the ATSB between 2006 and 2015.
The two years with the greatest number of incidents took place in 2014 and 2015, when there were 1,946 and 1,977 incidents, respectively.
The ATSB report noted the bulk of birdstrike incidents involved high capacity air transport services, defined as “regular public transport (RPT) and charter operations on aircraft certified as having a maximum capacity exceeding 38 seats or a maximum payload exceeding 4,200kg”.
“Both the number and rate of birdstrikes per 10,000 movements in high capacity operations have increased markedly in the past two years 2014 – 2015,” the ATSB report said.
“In contrast, the number of birdstrikes in low capacity operations and general aviation has remained relatively consistent.
“In the two years since 2013, the rates for six of the 10 major airports have increased relative to ten year averages. The largest increase in the rate of birdstrikes was observed at Cairns, Canberra, Darwin, Gold Coast and Sydney.”
The ATSB report said there have been only 10 reported birdstrike incidents in the 10-year period 2006-2015 that have resulted in injury.
Of those, eight occurred in general aviation, while two involved low capacity air transport operations. The ATSB said the injuries were minor in all cases.
The ATSB report said the four most common flying animals involved in birdstrike incidents in 2014-2015 were bats/flying foxes, swallow/martins, kites and lapwings/plovers.
“Swallows and martins had the most significant increase in the number of reported birdstrikes per year in the last two years, with these species being involved in an average of 96 birdstrikes per year for 2014 and 2015 compared with 65 per year on average across the entire 10-year reporting period,” the ATSB report said.
“Galahs were more commonly involved in birdstrikes of multiple birds, with more than 38 per cent of galah strikes involving more than one galah. However, larger birds were more likely to result in aircraft damage.
“For every 1kg increase in animal mass, the likelihood of a birdstrike causing damage increases by 12.5 per cent.”
Meanwhile, the ATSB said the most common time for birdstrike events was 0730-1030.