Boarded #RoyalForceOne supplied by #UnitedAirlines for my flight from #Dulles #International #Airport to #SanFrancisco. On their #B737 #800/#900. Only to be told that the #seatback #entertainment #DirectTV is not working on this #6hour #flight. #onepissedoffQueen. #AVgeek #wanderlust #travelgrind #instatravel #firstclass #insideflyer #1k @united