Definition
The three fundamental skills required to fly an aircraft solely by reference to instruments: instrument cross-check (systematically scanning the instruments), instrument interpretation (understanding what each instrument is telling you about the aircraft's state), and aircraft control (using that information to maintain or change attitude, heading, altitude, and airspeed through coordinated use of pitch, bank, power, and trim).
Plain English
The three core abilities a pilot uses to fly the airplane when they cannot see outside: looking at the right instruments in the right order, understanding what those instruments mean, and then flying the airplane based on that information.
Context Anchor
Seen in instrument flying lessons, especially when practicing airspeed changes, altitude control, heading control, and smooth aircraft control without relying on the outside view.
Why Pilots Care
These skills determine whether a pilot can safely continue flight and complete an approach when visibility drops or the horizon disappears.
Intuition Check
Do not read instrument skills as just “knowing what the instruments are.” In this context, it means using the instruments to actually control the aircraft smoothly and correctly.
Example Sentence 1
The instructor reminded the student that all three instrument skills — cross-check, interpretation, and aircraft control — must work together to hold altitude in the clouds.
Example Sentence 2
Regular practice builds instrument skills so a pilot can transition airspeeds smoothly without altitude or heading deviations.