The Rifle Site Technique for Precision Hoisting

In The Rifle Sight Technique for a Constant Angle Approach to a Pinnacle or Ridgeline post, we discussed using a background object in your landing zone to assist in maintaining the appropriate approach angle. The same concept can be applied to a precision hoist. The rifle sight technique can be exceptionally helpful when conducting vertical surface, precision tree canopy or urban SAR hoists.  

Once established in a hover, select an object in your field of view for your “rear sight.” Ideally, this object has a defined top and sides. The top of a pine tree is an example of an excellent rear sight. Next, select an object farther away from the pine tree (rear sight) as your “front sight”, which allows you to discern if your rear sight has moved left or right or up or down relative to the object you chose as your front sight. 

If a pilot establishes these cues out the front windscreen of the helicopter, they will get precise feedback on drift up and down, left and right. If these cues are established out the side window, they will get precise feedback on climbs and descents and forward and aft drift.  

If this rifle sight technique is difficult to perceive, hold your arm out in front of you, extend your index finger and point it up. Select an object beyond your index finger. Move your head left and right, up and down. Note the movement of the object in the background relative to the top and sides of your index finger.