All that I recall was that it was dubbed into English,similar to a serial entitled the flashing blade. It was shown during sat morning kids t.v on either the BBC or ITV. It also may have been set during ww2. This was a live action serial in colour made in the late 60s early 70s.
I found the answer,I looked at the production company who made the flashing blade. They also produced a serial about jet fighter pilots,the title was The_Aeronauts. The original French title was Les chevaliers du ciel (The knights of the sky). http://search.yahoo.com/search;_ylt=Awrj4kZfBS5QjgUAtT9XNyoA?p=the+aeronauts+tv+series&fr=ipad