Signal 1
STOP
Extend one arm forward and hold palm of hand vertical.
Signal 2
HOLD EVERYTHING
Clasp hands in front of body.
Signal 3
RAISE
With forearm vertical, forefinger pointing up, move hand in small horizontal circles.
Signal 4
LOWER
With arm extended downward, forefinger pointing downward, move hand in small horizontal circles.
Signal 5
EXTEND BOOM
With both fists in front of body point thumbs outward.
Signal 6
RETRACT BOOM
With both fists in front of body point thumbs toward each other.
Signal 7
RAISE BOOM (LUFF UP)
Arm extended, fingers closed, thumb pointing upward.
Signal 8
LOWER BOOM (LUFF DOWN)
Arm extended, fingers closed, thumb pointing downward.
Signal 9
SLEW
Extend one arm and point in the direction of swing of boom.