Even without a headset fitted the 'Cockpit Call' button always seems to work its better than banging as I have seen to many coffes landing on FDC's lap due to this
madjock
Write an email to the airlines flight safety officer and I am sure they will be happy to tell you.
yeah I could just imagine the response lol...
The other classic is the torchlight flicking the cockpit windows at night to knacker up the FDC's night vision, it goes down a treat I can tell you...
