What is a critical factor for the success of aircraft navigation systems?

Regular maintenance and calibration of instruments are vital to the success of aircraft navigation systems because they ensure that all navigational equipment operates accurately and reliably. Navigation systems rely on various instruments, including GPS, altimeters, and heading indicators, among others. If these instruments are not properly maintained or calibrated, their readings can become inaccurate, leading to potential navigation errors.

Accurate navigation is crucial for safe flight operations, particularly in complex airspace or adverse weather conditions. Regular checks and adjustments ensure that the systems function within designated operational parameters, thereby enhancing the overall safety and efficiency of the flight. This practice not only supports the technical integrity of the navigation systems but also fosters crew confidence in following flight routes and executing approaches and landings accurately.

Although factors like crew experience or aircraft size can impact flight operations, they do not directly relate to the technical functioning of navigation systems as maintenance and calibration do.