What is the term for the error resulting from focusing too much on a particular instrument during cross-checking?

The term for the error that arises when a pilot focuses too much on a particular instrument during the process of cross-checking is called an "emphasis error." This occurs when a pilot gives undue attention to one instrument while neglecting others that may provide critical information. Such a situation can lead to misinterpretation of the aircraft's attitude or performance because instruments are interrelated, and relying heavily on only one can skew the understanding of overall flight conditions.

When piloting an aircraft, it’s vital to maintain an effective cross-checking technique that involves evaluating multiple instruments at once. An emphasis error can result in potentially dangerous situations, such as failing to notice an altitude deviation or an airspeed fluctuation, which can lead to undesired flight outcomes. Understanding and applying proper cross-checking techniques helps minimize this risk, ensuring that all instruments are monitored appropriately, thereby promoting safer flight operations.