a police helicoptor can fly for 20 minutes
There are many different kinds of Cessna so your question is un-answerable.
This all depends on a helicopters model, weight, average speed, tank size etc etc, I would guess between 2-6 hours on average...
The typical flight time for a police helicopter to go from Washington D.C. to New York City is about 90 minutes. It may take less time if there is an emergency.
When you refuel your PWC it is important to check for gas fumes. You check for fumes before starting the engine and after adding fuel.
The over-water part of such a flight cannot be made by helicopter due to the range limits (You would run out of fuel over the ocean). The only exception would be a very few military aircraft that can do an in-flight refuel.
When you refuel your PWC it is important to check for gas fumes. You check for fumes before starting the engine and after adding fuel.
before refilling your fuel tanks
To make sure it is grounded in order to avoid sparks.
before refilling your fuel tanks
When you refuel your PWC it is important to check for gas fumes. You check for fumes before starting the engine and after adding fuel.
before refilling your fuel tanks
before refilling your fuel tanks