Final answer:
The Pilot in Command (PIC) has the ultimate responsibility for the aircraft's operation and safety, while the Second in Command (SIC) supports the PIC by assisting with various tasks such as monitoring systems, maintaining situational awareness, and conducting pre-flight inspections.
Step-by-step explanation:
The Pilot in Command (PIC) and the Second in Command (SIC) have distinct responsibilities in the cockpit. The PIC is ultimately responsible for the overall operation and safety of the aircraft during flight times, including making final decisions about all aspects of the flight. They are also in charge of flight planning and decision making, as well as navigation and communication.
On the other hand, the SIC is there to support the PIC. The SIC assists by taking on tasks delegated by the PIC, which can include helping with navigation, monitoring aircraft systems, maintaining situational awareness, and conducting pre-flight inspections. The SIC can also take over the controls if the PIC is incapacitated and is usually responsible for certain tasks that vary depending on the airline and specific aircraft.