Who is responsible for making the decision to stop or go during a flight?

The Pilot in Command (PIC) holds the ultimate responsibility for the safety of the aircraft and its passengers during a flight. This includes making critical decisions regarding the operation of the aircraft, such as whether to continue with a flight or to abort it based on the specific circumstances encountered. Factors influencing this decision can include weather conditions, aircraft performance, and any system malfunctions that may arise during the flight.

While co-pilots and flight engineers play vital roles in assisting with the operation of the aircraft, it is the PIC who retains the final authority and command. Their training and experience equip them to assess situations effectively and make these pivotal decisions. Air Traffic Controllers operate outside the aircraft, providing guidance and instructions, but ultimately they do not have the authority to make operational decisions about the continuation or cessation of a flight. Thus, the Pilot in Command is the correct choice for this question, as they are solely responsible for deciding whether to stop or continue the flight.