Complex sentence: The Admiralty first showed an interest in the idea of a carrier-borne Spitfire in May 1938 when, during a meeting with Richard Fairey (of Fairey Aviation), Fairey proposed that his company could design and build such an aircraft.
Split into simpler sentences: The Admiralty first showed an interest in the idea of a carrier-borne Spitfire in May 1938, during a meeting with Richard Fairey of Fairey Aviation. The proposal was made that his company could design and build such an aircraft.