Complex sentence: With 20 passengers and crew on board L-1 flew into a strong storm, crashing 20 miles north of Heligoland Island into the North Sea, breaking in two and the control car immediately sinking, drowning 14 of its occupants.
Split into simpler sentences: With 20 passengers and crew on board the L-1 flew into a strong storm, crashing 20 miles north of Heligoland Island into the North Sea. The ship broke in two and the control car immediately sank, drowning 14 of its occupants.