Complex sentence: As of October 2009 approximately 18 Gipsy-powered de Havilland DH.60 Moths remain on the British register, it should be noted that not all are currently airworthy.
Split into simpler sentences: As of October 2009 approximately 18 Gipsy-powered de Havilland DH.60 Moths remain on the British register. It should be noted that not all are currently airworthy.