Definition
The order in which a pilot scans the flight instruments during instrument flight to maintain awareness of aircraft attitude, performance, and navigation. An effective cross-check sequence moves the eyes systematically among the relevant instruments without fixating on any single one, and it varies with the phase of flight and the maneuver being performed.
Plain English
The pattern your eyes follow as you scan the instruments. You don't stare at one — you move through them in a deliberate order so you always know what the aircraft is doing.
Context Anchor
Seen in instrument takeoff training, especially during the first moments after liftoff when the pilot may have few outside visual cues and must rely on the instruments.
Derivation
Cross-check' comes from the idea of checking one source against another to confirm what's true. In instrument flying, no single instrument tells the whole story, so the pilot checks them against each other in a repeating sequence.
Why Pilots Care
Ensures continuous awareness of aircraft state and prevents errors from instrument fixation or misinterpretation.
Analogy
Similar to a driver methodically checking the speedometer, mirrors, and road ahead in a set pattern to stay safe.
Intuition Check
Do not read “cross-check sequence” as just a quick double-check. It means a repeated, ordered scan across the instruments, where the order helps the pilot keep the airplane under control.
Example Sentence 1
During the instrument takeoff, the student's cross-check sequence broke down and she fixated on the attitude indicator, letting the heading drift.
Example Sentence 2
In level cruise, the cross-check sequence helped the pilot notice a gradual heading drift before it became a problem.