Plain English Meaning

A practice routine flown by instrument reference only, where the pilot follows a set series of turns, climbs, and descents to build smooth instrument-flying skill.

Full Definition

A specific instrument proficiency maneuver flown under the hood or in simulated instrument conditions, consisting of a prescribed sequence of climbs, descents, turns, and level segments at defined airspeeds and headings. Pattern I is designed to develop and test a pilot's ability to control the aircraft solely by reference to instruments through changes in , , , and .