Which designation is used for the person in command of the aircraft and crew while on duty?

• A. Dispatcher
• B. First Officer
• C. Flight Engineer
• D. Captain/PIC

Answer: (D)

Being in command of the aircraft and crew while on duty is defined by the Pilot in Command, typically shown as Captain/PIC. The PIC is responsible for the safe operation of the flight, regulatory compliance, and final authority over all in-flight decisions and crew actions. The Captain is the senior flight crew member onboard and holds that command role during the flight. The other roles are different: a Dispatcher handles ground planning and coordination; a First Officer is the co-pilot who may assist and operate, but is not the designated person in command; a Flight Engineer focuses on aircraft systems rather than command authority. So Captain/PIC is the designation that signifies the person in command while the flight is underway.