Final answer:
The question pertains to the requirements for a pilot-in-command to operate an aircraft under IFR flight, which include adherence to specific regulations such as having a current instrument rating, filing an approved flight plan, and having proper onboard equipment.
Step-by-step explanation:
No pilot-in-command shall operate an aircraft in IFR flight unless they are in compliance with all applicable regulations that ensure the safety and navigability of the flight under instrument flight rules. This includes the possession of a current and appropriate instrument rating, a flight plan that has been filed and approved, functioning and appropriate onboard equipment required for the specific IFR operation, suitable weather minimums as specified for the flight, and, depending on the jurisdiction, other regulatory requirements such as currency in performing instrument maneuvers and passing a recent flight review or check.
For example, in the United States, the Federal Aviation Administration (FAA) outlines specific requirements in the Federal Aviation Regulations (FARs) for a pilot to operate under IFR. These requirements help ensure that the pilot has the necessary skills and experience to safely navigate through less than visual meteorological conditions.