The resolution of these fundamental rotor problems opened the way to progress, confidence built up rapidly, and after several cross-country flights a C.8L4 was entered for the 1928 Kings Cup Air Race. Although forced to withdraw, the C.8L4 subsequently completed a tour of the British Isles. Later that year it flew from London to Paris thus becoming the first rotating wing aircraft to cross the English Channel. The tour was subsequently extended to include Berlin, Brussels and Amsterdam.
The resolution of these fundamental rotor problems opened the way to progress, confidence built up rapidly and after several cross-country flights a C.8L4 was entered for the 1928 Kings Cup Air Race. Although forced to withdraw, the C.8L4 subsequently completed a tour of the British Isles. Later that year it flew from London to Paris thus becoming the first rotating wing aircraft to cross the English Channel. The tour was subsequently extended to include Berlin, Brussels and Amsterdam.