Garmin AOA System AOA System Owner’s Manual - Page 13

AOA System APPROACH AOA The Approach AOA is intended to align with the landing reference speed or threshold crossing speed. In some aircraft the Approach AOA may be consistent with Vref and equal to 1.3 x Vso (stall speed in the landing configuration). The Approach AOA is indicated by the illumination of all green bar annunciators and the Approach AOA Reference (green circle) annunciator. All Green Annunciators Illuminate Approach AOA Reference Illuminated GI 260 (Approach AOA) HIGH AOA WITH AUDIBLE ALERT A high AOA approach is indicated by the illumination of the yellow Caution Alert AOA bar/chevron annunciators. A slow audible "Beep-Beep" alert coincides with illumination of the upper yellow chevron. Yellow Caution Alert Annunciators Illuminate  Beep - Beep (Slow) GI 260 (High AOA) 190-01773-00 Rev. A AOA System Owner's Manual 7