 CONT: When Maurice Quintal leaves the cockpit after the initial  resolution of the pump failure, he is seen to chat with a flight  attendant in the galley. At this time, his epaulettes show four  stripes. At all other times they show three. Other shots show that  the epaulettes being worn, are (unusually) reversable, with a four  bar side and a three bar side. He simply got his upside down.