Rappel crews enable DELWP to rapidly access fires in the remote forest areas of Victoria where there are generally no clearings to land helicopters and road access takes many hours (if tracks exist at all).
For this reason, the rappel crews are used as first attack on bushfires.
As you can see in this clip, each firefighter individually abseils (or rappels) down a rope from a helicopter with a personal kit before a bag of firefighting equipment (hand tools such as rakehoes) is deployed.
I don’t get the term “heli-rappellers.” Does anyone rappel from a fixed-wing aircraft?
No one in their right mind rappels from a fixed wing aircraft. However, I would venture to guess that less than 1% of all rappelling is done from helicopters.
Mirriam-Webster’s definition:
I have seen an Australian Army Pilatus Porther “hover” where the wind speed equaled the aircraft forward speed so theoretically someone could rappeller form the fixed wing aircraft!
Yes if it is on fire and the only way out is through the cockpit side window or emergency exit on top. Of course it helps if the aircraft is on the ground.