AIM 8/15/19  7/16/20  FIG 7 − 4 − 5 Vortex Movement Near Ground  −  No Wind FIG 7 − 4 − 4 Vortex Flow Field AVOID Nominally 500-1000 Ft. Nominally 500-1 000  Ft. Sink Rate Several Hundred Ft.,/Min. No Wind 3K 3K FIG 7 − 4 − 6 Vortex Movement Near Ground  −  with Cross Winds 6K (3K + 3K) 3K Wind 0 (3K - 3K) 7 − 4 − 3 Wake Turbulence