Controlling the Airplane by Reference to Instruments

Basic instrument maneuvers are the same four fundamentals you fly by outside reference — straight-and-level flight, turns, climbs, and descents — flown instead by reference to the flight instruments. The attitude indicator is the direct substitute for the natural horizon and is the master reference: its miniature airplane and horizon bar show pitch and bank exactly as the real horizon would. Straight-and-level flight holds a constant altitude and heading; a constant-airspeed climb or descent sets a pitch attitude and power so the airspeed stays steady; and a turn to a heading is normally flown at a standard-rate turn — three degrees per second, which completes a 360-degree turn in two minutes. No single instrument tells the whole story, so the pilot cross-checks: the eyes move continuously among the attitude indicator, altimeter, airspeed indicator, vertical speed indicator, heading indicator, and turn coordinator, comparing each against the others rather than fixating on one. The cross-check both keeps the airplane where it belongs and reveals a failed instrument so its indication can be disregarded — if the attitude indicator fails, the turn coordinator still supplies bank information. The reason this skill matters is spatial disorientation: without reliable outside visual references, the vestibular and kinesthetic senses become unreliable and can convince a pilot that a wing is level when it is not. The remedy is to disregard those false sensations and fly the instruments. A VFR pilot who inadvertently enters instrument conditions should make a controlled 180-degree turn, on instruments, to return to the visual conditions just left. The formal attitude-instrument-flying method lives in the Instrument Flying Handbook and is beyond this private-pilot knowledge introduction.