Complex sentence: When Charles Lindbergh won the Orteig prize the planned attempt was abandoned and the S-37 was converted into a passenger airliner for commercial use and the Jupiter engines were exchanged for Pratt & Whitney Hornet's.
Split into simpler sentences: When Charles Lindbergh won the Orteig prize the planned attempt was abandoned. The S-37 was converted into a passenger airliner for commercial use and the Jupiter engines were exchanged for Pratt & Whitney Hornet's.