As RTN11 says the law won't allow it now but I can remember visiting the flight deck many times back in the good old days. Some of the more memorable times include Dan Air BAC 1-11 jump seat ride over the Pyrenees and decent into Gerona, Odyssey International B757 jump seat ride over Greenland on-route Newcastle / Toronto with the Pilot explaining our possible diversions if we lost an engine, Balkan TU154 jump seat ride over most of Europe in the dark on-route Newcastle / Bulgaria, British Midland DC9 jump seat shortly after Heathrow takeoff and landing on runway 06 at Teesside, brilliant although that "clattering" trim wheel did make me jump !!. Ahh the "good old days".
Also I agree that some pilots do like a "hello" from passengers. When departing from our flight from Newcastle to Heathrow last year I popped my head into the cockpit to just to congratulate them on "The Greaser" which was appreciated and caused lots of laughter and joking between the pilots.
Last edited by Mike Tee; 26th Mar 2013 at 11:21.