Wino, why go to all the complexity and trouble of creating a binary device, why not pour the contents of a cheap bottle of brandy in the toilets and then throw in a match. I am sure that the resultant fire might need you finding a diversion pretty quick, though there are not many airfields available mid atlantic. Could the answer be that the resultant drop in airside sales of duty free liquor is far more inconvenient to the airport operators than piss*d off passengers are.
My dear rmac, if one is going to commit suicide in such a spectacular fashion, perhaps ones terrorists of today may splash out on a better upmarket brandy, after all, surely they are not going to be about to quibble over their last credit card bill or indeed gain from any possible air miles they may earn...........