If you don't pass the test you don't climb into the aircraft.
Simple really follow the rail network system at least you will be clean for the duration of the flight!
Two comments on that suggestion, on the face of it a very reasonable one.
Firstly (the flippant one ! ) - what about the booze on board ? The bar or duty-free trolley. More responsibility for the number one to balance the books !
Secondly (and more seriously) many people who have a genuine alcohol problem will NOT necessarily be completely fit to fly simply because their blood (and therefore breath) concentration has fallen to zero. Performance factors such as alertness, memory, reaction time, concentration, to name but a few, may all remain impaired for much longer than ethanol is actually detectable.
I do agree, though, that this suggestion should NOT be opposed by the vast majority of crews who have no problem. As the old saying goes : "if you have nothing to hide, you have nothing to fear".
