Flight calibration of a runway entails evaluating and confirming the precision and performance of navigation, communication, and visual aids that facilitate aircraft operations in the vicinity of the runway. This process is crucial for ensuring that these systems comply with safety and operational standards, enabling safe aircraft operations, particularly under Instrument Flight Rules (IFR). Calibration involves systematic testing and adjustments to guarantee that all aids, such as ILS (Instrument Landing System) and visual approach slope indicators, function optimally, contributing to the overall safety and efficiency of flight operations.