The Six Pack: Basic Flight Instruments
Learn the six basic flight instruments, how gyroscopic and pitot-static instruments work, and how student pilots use them.
The "six pack" is the traditional group of six primary flight instruments found in many training airplanes. Even if you fly a glass-panel aircraft, these instruments are still worth understanding because the same information appears on modern displays.
The six instruments are the attitude indicator, heading indicator, turn coordinator, airspeed indicator, altimeter, and vertical speed indicator.
The Two Instrument Families
The six pack is usually divided into two groups: gyroscopic instruments and pitot-static instruments.
Gyroscopic instruments use a spinning gyro to help show attitude, heading, or turn information. The attitude indicator, heading indicator, and turn coordinator are in this group.
Pitot-static instruments use air pressure. The airspeed indicator, altimeter, and vertical speed indicator are in this group.
Knowing which system feeds which instrument helps you understand failures. If the pitot tube is blocked, the airspeed indicator may be affected. If the static system is blocked, the altimeter and vertical speed indicator may be affected too.
Attitude Indicator
The attitude indicator shows pitch and bank relative to the horizon. It is one of the most important instruments for instrument flying because it tells you whether the airplane is nose-up, nose-down, wings-level, or banked.
Student pilots should learn to read it quickly but not stare at it. In visual flying, the real horizon is primary. In instrument flying, the attitude indicator becomes a core part of the scan.
Older vacuum-driven attitude indicators can have operating limits. If the airplane exceeds those limits, the gyro may tumble or give unreliable indications until it recovers.
Heading Indicator
The heading indicator, also called a directional gyro in many aircraft, gives a stable heading reference. It is easier to use than the magnetic compass during turns and turbulence.
The heading indicator can drift over time, so pilots periodically align it with the magnetic compass. This is a normal cockpit habit in many training aircraft.
Some heading indicators include a heading bug. That simple marker is useful for holding assigned headings, setting runway headings, or planning turns.
Turn Coordinator
The turn coordinator shows rate of turn and coordination. The small airplane symbol indicates turn direction and rate. The ball below it shows whether the airplane is coordinated, slipping, or skidding.
"Step on the ball" is the common reminder. If the ball is left, add left rudder. If it is right, add right rudder.
The turn coordinator is especially useful for instrument training because it helps establish a standard-rate turn, often described as 3 degrees per second or a full 360-degree turn in two minutes.
For a focused explanation of that instrument, see the turn coordinator explained and standard-rate turns.
Airspeed Indicator
The airspeed indicator uses pitot and static pressure to show indicated airspeed. It is the only standard pitot-static instrument that uses both sources.
For student pilots, airspeed is tied to nearly everything: takeoff, climb, cruise, approach, flap limits, maneuvering speed, stall awareness, and never-exceed speed.
The colored arcs help you stay within safe operating ranges. The white arc relates to flap operation, the green arc to normal operating range, the yellow arc to caution range, and the red line to never-exceed speed. Always use the aircraft's specific markings and operating handbook.
Altimeter
The altimeter measures static pressure and displays altitude, usually above mean sea level when set correctly. Because pressure changes with weather, pilots set the altimeter to the current altimeter setting.
A wrong setting means a wrong altitude indication. That is why altimeter setting changes matter during cross-country flying and when talking with air traffic control.
Vertical Speed Indicator
The vertical speed indicator shows rate of climb or descent in feet per minute. It is useful, but it usually lags slightly behind actual aircraft movement.
Do not chase the VSI. Use pitch and power first, then confirm the trend. If the altimeter and attitude indicator tell a different story, cross-check instead of trusting one instrument alone.
Building a Good Scan
The six pack teaches one of the most important habits in flying: cross-check. No single instrument should own your attention. You compare attitude, airspeed, altitude, heading, turn, and vertical trend to understand what the airplane is doing.
Mastering these instruments makes every cockpit easier. Glass displays may look different, but the airplane still needs the same basic information: attitude, airspeed, altitude, heading, turn, and vertical performance.
Official References
Need help applying this to your training?
Use this guide as a starting point, then bring the confusing parts to a focused ground lesson. Diego works with Louisville-area and remote students on FAA knowledge, oral-prep, and practical training decisions.
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