Complex sentence: The pilot had to circle the airport while waiting for a small plane to clear the runway, then, according to eyewitnesses, the plane began to climb and bank erratically and crashed suddenly in a field near the hamlet of Berg.
Split into simpler sentences: The pilot had to circle the airport while waiting for a small plane to clear the runway. Then, according to eyewitnesses, the plane began to climb and bank erratically and crashed suddenly in a field near the hamlet of Berg.