Luxair S.A., Société Luxembourgeoise de Navigation Aérienne, operating as Luxair, is the flag carrier airline of the Grand Duchy of Luxembourg. It operates scheduled services, plus charter and seasonal summer services. Its main base is Luxembourg – Findel Airport.
Descended from the Luxembourg Airlines Company, founded in 1948, Luxair was set up in 1961 to meet the growing demand for air links between Luxembourg and other European cities.
Source: Wikipedia
Design #3
Design #6; 3 variations
Design #7