I watched an aviation program recently where a pilot stated that one of the reasons LX retired the MD-11 was a high number of flight crews required per aircraft. He explained that each MD-11 required 10 Captains and 15 FOs. The mighty 11 was a two-man operation like the B767/777 and the A330/340, so how come there is a difference in the crew requirements? How many Captains/FOs are required per B777 ? I would imagine that the airline’s policy and the average length of flight would be of greater influence than the type of aircraft.