What does "cross-checking" involve in navigation?

Cross-checking in navigation involves using multiple navigation sources to verify position and course. This practice is essential for ensuring accuracy and safety during flight operations. By consulting various sources, such as GPS, VOR, and DME, a pilot can confirm their current location and intended path, reducing the likelihood of navigation errors.

In complex flight environments, relying on a single navigation source can be risky, as unexpected failures or inaccuracies could lead to significant navigation errors. By cross-checking, pilots can take advantage of the strengths of different systems and compensate for any weaknesses or limitations. Additionally, cross-checking aids in situational awareness, enabling pilots to make informed decisions throughout their journey. This method is a fundamental part of effective flight management and ensures a higher level of safety and reliability.