Instrument proficiency refers to a pilot's ability to fly an aircraft solely by reference to instruments, rather than visual cues. This skill is essential for navigating in poor weather conditions, where visibility is limited. Pilots achieve this proficiency through training and practice, often obtaining an Instrument Rating as part of their flight certification. To maintain instrument proficiency, pilots must regularly practice their skills and complete specific training requirements. This includes flying under simulated instrument conditions and passing periodic evaluations. Staying proficient ensures that pilots can safely operate an aircraft in various environments, enhancing overall flight safety and effectiveness.