What is one of the responsibilities of the SIC during flights?

One of the key responsibilities of the Second in Command (SIC) during flights is to be prepared to assume the authority of the Pilot in Command (PIC) in the event of PIC incapacitation. This readiness is vital for maintaining flight safety and ensuring that the aircraft can be operated effectively in the absence of the PIC. The SIC must be trained and capable of stepping into the role of the PIC seamlessly, demonstrating their essential function in supporting the flight crew's operational hierarchy and maintaining the chain of command.

The other responsibilities, such as performing all tasks without delegation, do not accurately reflect the collaborative nature of flight operations. The SIC's role is to assist the PIC and share responsibilities rather than to operate independently. Ignoring PIC directives goes against the principles of professionalism and safety in aviation, as adherence to the PIC's commands is critical for effective flight operations. Additionally, the SIC is not isolated from accountability; they must report operational status and issues to the PIC and participate in the overall decision-making process.