Above: The S-61 snorkels from a dip tank in phase two of the night-flying trial. Photo by Coulson.
(UPDATED at 8:40 a.m. MT February 28, 2018)
The test of firefighting helicopters dropping water at night has started in Victoria, Australia. If after the test the Civil Aviation Safety Authority (CASA) approves hover-filling and dropping at night, the next step will be to consider using fixed wing air tankers at night.
“Fighting fires in the dark hours, in the cooler part of the night or in the early parts of the morning would enable us to get on top of fires quicker, particularly those in remote parts of Victoria where access may be difficult,” Emergency Management Commissioner Craig Lapsley said Monday.
“While the use of night vision goggles and infrared technology isn’t new, these have not been used together in Australia. We are very keen to trial this capability, and understand how it would work in a system, and make it safe to do so.”
CASA has approved the trial which will involve controlled conditions at all times.
The first of its kind in Australia, the test will be based at Ballarat Airport. Emergency Management Victoria is the lead with Department of Environment, Land, Water and Planning, Country Fire Authority, and the National Aerial Firefighting Centre.
The trial will test the ability to hover-fill helicopters at night and the efficiency of night vision technology, including infrared systems and night vision goggles.
Several agencies in Southern California have been conducting night helicopter operations for years, but their SOPs require that they land to refill with water, rather than hover-fill. One of the reasons is that the B-212’s and B-412’s create too much mist for the pilots to see with night vision goggles.
The results of the trial will guide the future use of night-time aerial firebombing operations in Victoria as well as other states and territories.
Two firefighting helicopters operated by Coulson Aviation are participating in the trial. A Sikorsky S-61 will drop water while a Sikorsky S-76 will provide intelligence, evaluate effectiveness, and identify targets with a laser designator.
In the trial the S-76 Firewatch helicopter orbited approximately 1,000 feet above the S-61 water dropping operation. It used a GPS controlled illuminated laser pointer to inform the fire bombing helicopter where to drop the loads. The S-61 is fitted with night vision goggles, but also has twin adjustable Night Suns on the landing gear along with the helicopter searchlights.
In the video below an australian official says the next step is to consider using fixed wing air tankers at night.