Plain English Meaning

A quick sanity check. After you work something out or read something off an instrument, you stop and ask, 'Does this answer actually make sense for what I'm doing?' If it doesn't, you investigate before acting on it.

Full Definition

Informal, practical reasonableness checks a pilot applies to verify that flight planning numbers, instrument indications, or operational decisions actually make sense in the real world, rather than accepting them solely because they came from a calculation, an app, or an instrument.

Context Anchor

Seen in flight review guidance for instructors who are evaluating whether a pilot is ready to keep operating safely as pilot in command.

Derivation

“Crosscheck” means to check one thing against another instead of trusting only one . In this phrase, the instructor is checking ’s against several practical references, such as , rules, limits, and the actual .