Complex sentence: By February 2014 a total of 800 hours of test flying had been completed and on 24 March 2014 the first conforming prototype flew, and took a short break from the certification program to also fly at Oshkosh Airshow 2014.
Split into simpler sentences: By February 2014 a total of 800 hours of test flying had been completed; and on 24 March 2014 the first conforming prototype flew. It took a short break from the certification program to also fly at Oshkosh Airshow 2014.