The airline pilot is responsible for the safe and efficient operation of aircraft, adhering to all applicable regulations and company policies. He or she determines optimal departure times and routes, and makes critical decisions regarding flight cancellations based on weather or other prevailing conditions. The pilot ensures flights are conducted in full compliance with federal, local, and company regulations, policies, and procedures. He or she institutes necessary changes dictated by en route conditions, facilitating the continuation of the flight within established guidelines.