FairdealFrank, as Manchester Airport has a 77 year history during which, apart from 1939-1945 when it contributed massively to the war effort, it has always paid a dividend to the councils of Manchester, then Greater Manchester and now the constituent metropolitan boroughs, therefore helping to reduce the rates/council tax to be levied I, and no doubt many others here who are better informed than you, am left wondering just what point you are trying to make.
Wasn't criticising! Actually think that municipally owned airports are damn good idea.