What does IFR stand for in aviation regulations?

In aviation regulations, IFR stands for Instrument Flight Rules. This term defines the set of regulations under which a pilot operates an aircraft in weather conditions generally less than those required for visual flight rules (VFR). Under IFR, pilots rely on instruments to navigate, rather than outside visual references. This is especially crucial during poor weather conditions, where visibility is limited, and a pilot must depend on their instruments and air traffic control for navigation and safety.

Understanding IFR is essential for pilots, as it governs the rules of flying in controlled airspace, providing guidance on clearance requirements, communication protocols, and altitude management. This structured framework is crucial for maintaining safety and ensuring orderly traffic in the skies.