Definition
The continuous, systematic scanning of flight instruments and outside references by a pilot to monitor aircraft attitude, performance, and situational awareness. Cross-checking involves moving the eyes deliberately from one instrument or reference to another, comparing their indications against each other to detect changes, errors, or instrument malfunctions before they become problems.
Plain English
Looking back and forth between your instruments (and outside) in a steady pattern so you always know what the airplane is doing and can spot anything that looks wrong.
Context Anchor
Used in human factors discussions when a pilot may be overloaded, distracted, or missing important information because attention has narrowed.
Derivation
From 'cross' (across, back and forth) and 'check' (to verify or inspect). The idea is verifying one source of information against another rather than trusting a single instrument or glance.
Why Pilots Care
Detects faulty instrument indications or misleading sensory input before they lead to incorrect control inputs.
Intuition Check
Do not read cross-check as simply “check again.” In aviation, it means checking one source against another source so the two can confirm or question each other.
Example Sentence 1
During the climb, the pilot maintained a steady cross-check between the attitude indicator, airspeed, and altimeter.
Example Sentence 2
During the ILS approach she cross-checked the localizer needle with the runway lights to confirm alignment.