What does 'IFR' stand for in aviation?

'IFR' stands for Instrument Flight Rules in aviation. This term refers to a set of regulations under which a pilot operates the aircraft in weather conditions generally worse than visual flight rules (VFR). IFR is fundamental to aircraft operations, particularly in poor weather when visibility is limited, as it allows pilots to navigate and control their aircraft by relying on instruments, rather than visuals outside the aircraft.

Under IFR, pilots must follow specific air traffic control procedures and maintain communication with air traffic control, which plays a significant role in ensuring safety and efficiency in the airspace. IFR allows for safer operation of aircraft during inclement weather and enables navigation in complex airspace, making it a critical component of modern aviation practices.