Has anyone noticed that Av-Gas (Aviation fuel) is half the price of Diesel?, and there is no tax on Av-Gas.
All jets, planes and gas turbine helicopters use this fuel.
There was a small increase (per Tonne)(3c) as it is bought, but not enough to warrant the fare increases the airlines have been suggesting.
Airlines buy in bulk, and screw the traveller into thinking this stuff costs a lot.
They over-fill all aircraft witha certain fill and then spill fuel before landing.
That is for fixed-wing aircraft, a helicopter can only carry what it can for a flight, that wieght is taken into account.
A helicopter, if it was to dump it's fuel would start a fire, having said that there is no way to dump fuel from a helicopter, unless you want to puncture a Fuel tank.