Wednesday’s accidental drop of 2,500 liters (660 gallons) of fire retardant in downtown Canberra, Australia led to a hazardous material response from the Australian Capital Territory Fire & Rescue.
Richard Alder, the General Manager of the National Aerial Firefighting Centre in Australia, said the inadvertent retardant drop came from a Single Engine Air Tanker, an Air Tractor AT802 with a Gen3 door. The SEAT encountered significant turbulence on climb-out from the retardant base at Canberra airport on the way to the Orroral Valley Fire.
“In maneuvering the aircraft through the turbulence, the pilot accidentally activated the drop button,” Mr. Alder said. “The drop system was armed, in accordance with normal climb-out procedure, to enable a rapid emergency drop [should it become necessary].”
He said the aircraft operator is reviewing their procedures to see if the risk of an inadvertent drop can be reduced, while maintaining appropriate safety for the aircraft and pilot.
The retardant affected Parkes Way, a parking lot at Rond Terrace, a large roundabout with a pond, and the south end of Anzac Parade, the street that leads to the Australian War Memorial. The drop was a short distance northwest of the National Emergency Services Memorial and about a mile north of the Parliament House at the capital.
Mr. Alder said the SEAT was following a route to the fire that avoided overflight of residential areas.
Several decades ago in the United States large air tankers worked out of a retardant base at the Ontario Airport east of Los Angeles. The story goes that a lady who lived near the airport was known for complaining about the noise from the firefighting aircraft. Her criticism had little effect until the day one of the tankers had a problem on climb-out and had to jettison the load. And, as luck would have it, the retardant landed on that poor lady’s house. Not long after that the tanker base was permanently closed.
An air tanker dropped retardant in the city of Canberra, the capital of Australia on February 4.
The aircraft was working on the Orroral Valley fire in Namadgi National Park in the Australian Capital Territory (ACT). The ACT Emergency Services Agency said the aircraft “encountered turbulence causing 2,500 litres of retardant to be released on Parkes Way.” A number of cars were coated with the retardant, and judging from the photo below, at least one person.
The fact that 2,500 liters (600 gallons) were released leads one to guess the aircraft may have been a Single Engine Air Tanker, unless it was a partial load from a large air tanker.
The turbulence could have forced a low flying air tanker to suddenly and unexpectedly lose altitude, and the pilot might have jettisoned the load in order to help regain altitude and control. Or, the G-forces produced stress causing the tank doors or other hardware to fail. Regardless, we are happy that retardant was the only thing that fell out of the sky on Tuesday.
ACT Fire & Rescue worked with the Environmental Protection Authority to assess the situation at the impacted area which included the carpark at Rond Terrace and Anzac Parade at Rond Pond.
The retardant was close to the National Emergency Services Memorial and about a mile north of the Parliament House at the capital.
Several bushfires in the Australian Capital Territory (ACT) have kept firefighters busy in recent days. The Department of Defense admitted that one of the fires two weeks ago was caused by heat from a landing light on an MRH-90 Helicopter. It burned within a kilometer of Tharwa, a suburb south of Canberra.
From the Australian Broadcasting Corporation:
“The fire started during routine aerial reconnaissance and ground clearance work being conducted in the area in support of our local firefighters and authorities,” Emergency Services Minister Mick Gentleman said on behalf of the Department of Defense.
Lieutenant General Greg Bilton said the helicopter was using the lights to help it land in smoky conditions, but the heat set a fire that grew rapidly and damaged the aircraft. He said defense was investigating the issue but operating procedures would be changed so that the landing lights were not used in extreme conditions.
It is reportedly the first time a fire has been started by a helicopter landing light.
Smoke from another fire in the ACT that shut down the Canberra Airport for a while was caused by beekeepers checking hives. The fire started January 22 and for several hours threatened homes and businesses.
From the ABC:
The Beard fire jumped the Molonglo River on Thursday and came close to the suburbs of Beard, Harman and Oaks Estate. It also merged with a second fire on Kallaroo Road, which began in the same suburb of Pialligo earlier in the day.
The combined fire reached 424 hectares in size and was at emergency alert level for much of the afternoon, but by 9:00pm was down to 379 hectares.
The hives are part of a national honey bee surveillance program that regularly checks for the arrival of exotic pests that might threaten Australia’s bee population.That process uses smokers to calm the bees so the hives can be inspected, which requires lighting fuels to generate the smoke. The hives are maintained on behalf of the ACT Government by Canberra Region Beekeepers — the program is usually run through state agriculture departments in other jurisdictions.
Air tankers based in Richmond, New South Wales have been busy recently. Between January 26 and 31 a DC-10, Tanker 911, flew 22 missions, while T-137, a 737, flew 12. Their destinations were in or near the ACT and in southern NSW.
Tanker 131, a C-130Q based in Avalon, Victoria completed several missions north of Melbourne and along the Victoria/NSW border.
A portable air tanker reloading base at Canberra in the Australian Capital Territory was used recently for the first time. Christening the new facility was Conair’s Tanker 166, an RJ85 from Canada that is spending the Northern Hemisphere winter down under. T-166’s main base this summer is Richmond (near Sydney).
The aircraft was working on a wildfire near Michelago, New South Wales (map).
A total of six large air tankers from North America have been working in Australia during their 2018-2019 summer. Three other tankers with their primary base at Richmond include a 737 (T-137), a C-130Q (T-134), and another RJ85 (T-165). And based at Avalon airport in Melbourne, a C-130Q (T-131), and an RJ85 (T-163).
Thanks and a tip of the hat go out to Isaac. Typos or errors, report them HERE.