ATSB report highlights safety issues with firefighting
The Australian Transport Safety Bureau (ATSB) has observed more safety incidents with the increase in aerial firefighting over Australia in recent years.
In a statistic report, the ATSB notes a growth in occurrences between July 2019 and March 2020 than at any time during the previous 20 years. There were also two fatal accidents between August 2018 and March 2020, compared to just three in the previous 17 years.
“Given the amount of recent bushfire activity in Australia [the 2019–20 season is estimated have around four times the aerial firefighting activity than other recent bushfire seasons], these results could be expected and probably do not indicate a significant increase in the risk per flight,” says the ATSB.
“However, it does indicate that the reported occurrences associated with aerial firefighting are probably increasing.”
The report does not refer to specific accidents, but a major accident occurred in February when a Lockheed Martin EC-130Q operated by Coulson Aviation crashed while fighting fires in New South Wales, kill three crew members.
As for the aircraft types involved in safety incidents while firefighting, “almost half” involved turboshaft-powered helicopters. When hours flown and the number of flights are taken into account, however, turboshaft-powered helicopters safety occurrences are consistent with other types. Moreover, piston-powered helicopters were more than twice as likely than turboshaft-powered helicopters to be involved in a severe occurrence.
“Over the [20-year] study period, over half of reported occurrences, all fatal accidents and four fifths of more severe occurrences were operational in nature,” says ATSB. “Terrain collisions accounted for around half of the operational occurrences and 71 per cent of the more severe occurrences. Additionally, around one quarter of operational more severe occurrences involved aircraft control.”