Plain English Meaning
A flight from one airport to another, far enough away to count as a cross-country trip, flown by the rules that apply when the pilot is using cockpit instruments to navigate and is working with air traffic control the whole way.
Full Definition
A flight conducted under Instrument Flight Rules between two airports that are far enough apart to meet the cross-country distance requirements set by the FAA, during which the pilot navigates and operates by reference to instruments and follows ATC clearances rather than relying on outside visual references.
Context Anchor
Seen in accident reports, flight plans, training records, and instructor discussions about and .