Being that the AirCrane can be used for retardant drops as well as water/foam drops, I asked Kenny Chapman when AirCrane is used for retardant drops in the U.S.:
Once the Crane is hauling retardant it is utilized the same as an airtanker. (Building retardant line ahead of the fire.) It can also switch back and forth between retardant, water and foam as needed. Retardant is not used in the initial attack role unless the helicopter is sent to a new fire directly from an existing incident that has a retardant plant set up already.
I asked him if there was ever a situation where a mobile retardant base was established where an AirCrane was working an existing fire and a “new” fire popped up near the mobile retardant plant. With a mobile retardant plant already set up near a “new” fire, was the AirCrane used to haul retardant in “initial attack.” He said:
I remember one that I did on a fire out of Santa Ynez around 2003 or so. Someone was smoking in fire camp and started a fire at the camp at exactly the time I was picking up a load. I was able to contain the new start with one load.
AirCranes carrying water/foam are frequently used in initial attack. The AirCrane has a separate foam tank, so after the pilot has filled the main tank with water he can decide whether or not to inject foam into the tank (already filled with water) based on the wants/needs/requirements of the incident commander.
Because the tank on the AirCrane does not have to be rinsed or otherwise cleaned out between retardant and water/foam drops, the AirCrane can go from flying initial attack with water/foam to flying extended attack with retardant once a mobile retardant base is set up near the incident.
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