The aircraft or crew used to operate two or more flights, one going and one returning to the home base, within the same day.

• A. Turn (local)
• B. Reserve Line
• C. Ready Reserve
• D. Remain Overnight (RON) - aircraft

Answer: (A)

The key idea here is a local turn: an operation where an aircraft and its crew are used for more than one flight in a single day, returning to the home base between legs and then departing again. This setup is designed to maximize utilization of the aircraft and crew while keeping them tied to the base for the day.

In a local turn, you arrive at the base, conduct a quick turnaround, and launch on another flight from the same base, with the same aircraft and often the same crew continuing on another leg. This contrasts with options like being on reserve, which means the crew is not fixed to a schedule and can be called in as needed, or ready reserve, which is a standby pool not assigned to a specific flight. Remaining overnight means staying away from the base for an overnight layover, not completing multiple short legs in one day.

So, the situation described—two or more flights with a return to the home base within the same day—fits the local turn concept best.