Complex sentence: BOAC's 314As were withdrawn from the Baltimore-to-Bermuda route in January 1948, replaced by Lockheed Constellations flying from New York and Baltimore to Bermuda.
Split into simpler sentences: BOAC's 314As were withdrawn from the Baltimore to Bermuda route in January 1948. They were replaced by Lockheed Constellations flying from New York and Baltimore to Bermuda.