There is a US Airways forum here:
http://forums.propilotworld.com/index.php
However, you must be a US Airways pilot to access the specific US Airways forum. But, there are many US Airways pilots in the general area of the site.
I am a furloughed US Airways pilot -- used to fly the 767 PHL-LGW, and to our other cities in Europe. Now I work for JetBlue. Everyone above is correct -- absolutely impossible to visit the flight deck in flight.
Look at your reservation and see on which type of aircraft you are booked (767 or A330). I think they only use the A330 any more on LGW flights, which is good because it's a much nicer ride than the 767. If you are on a 767, try to change to a flight served by the A330.
The Airbus has much more comfortable seats, better amenities (as it may be), and individual TVs for each passenger.