Garmin G3X Installation Manual page 527

AOA is the angle between the aircraft's wing and the oncoming airflow (see Figure 31-23). As AOA
increases, eventually it will reach a critical value (determined by the physical characteristics of the wing),
whereupon the airflow will separate, the wing will stop producing lift, and the aircraft will stall. The
primary purpose of an AOA system is to monitor the wing's angle of attack and provide feedback to the
pilot when the aircraft is approaching the critical AOA.
190-01115-01 G3X/G3X Touch Installation Manual - GDU 37X Config and Post Install Checkout
Rev. AA
LOW ANGLE OF ATTACK
MEDIUM ANGLE OF ATTACK
EXCESSIVE ANGLE OF ATTACK
Figure 31-23 Angle of Attack (AOA) Illustration
Air Flow is Broken.
No Lift to Sustain
the Airplane.
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