[Gromit801]

Where is the plane in #1 supposed to come from? What airline has the money to have multi-million dollar planes sitting around doing nothing, waiting to be used in case of a breakdown? And even if there were, there couldn't be one at every airport. Good grief, can you imagine if every airline had a spare plane sitting at every airport they fly into? There wouldn't be enough parking space, and the airline size would double. Or, if you wish, the stand-by plane is kept somewhere else. Well now they have to get it prepared for flight, find a crew, and get it on it's way. Maybe several hours before you see it, in which time you have probably been rebooked on another flight. Guess who's paying for all of that, ultimately, the ticket buyer.