Slope Operations

Purpose: To land from a hover and takeoff to a hover from a sloping surface.

Note: Prior to conducting slope operations, the pilot will review Robinson Safety Notice SN-9 and become thoroughly familiar with dynamic roll-over characteristics.  For training purposes, use a maximum slope angle of 5 degrees.

Cyclic: Aircraft Position
Collective: Hovering Height
Pedals Heading


Slope Landings

  • Approach the slope at a 45 degree angle.
  • Clear the area.
  • Into the wind, in a 3 foot hover, stabilize the aircraft parallel to the slope.
  • Smoothly and slowly begin to lower the collective to establish a slow rate of sink.
  • When the upslope skid contacts the ground, begin applying lateral cyclic into the slope to hold the skid into the slope.
  • Stabilize the helicopter in a one skid hover before continuing.
  • Continue slowly lowering the collective while hold the upslope skid in the slope until the downslope skid is firmly on the ground.

Note: If full cyclic travel is reached prior to the downslope skid’s making contact with the ground, abort the maneuver.

  • Once the skids are on the ground, slowly lower the collective, and then center all the controls.


Slope Takeoffs

The procedure for slope takeoff is almost the exact reverse of that for a slope landing.

Ensure skids of the aircraft are clear.

  • Apply cyclic into the slope.  Slowly begin to increase collective.
  • As the helicopter becomes light on the skids, pause and neutralize any aircraft movement.
  • Maintain heading with pedals.
  • When the down slope skid breaks ground, slowly begin to center the cyclic.
  • As a level attitude is reached, the cyclic should be neutral.
  • Continue to increase collective while maintaining position until in a 3 ft hover.
  • Slowly move the helicopter laterally away from the landing spot to ensure clearance for tail rotor.

Never turn the tail rotor towards the slope.

Performance Standards Private ACS Commercial PTS
Heading + 10 Degrees + 5 Degrees
Common Errors

  1. Turning tail of helicopter upslope.
  2. Raising/Lowering the collective to rapidly.
  3. Sliding down slope due to insufficient lateral cyclic.
  4. Improper use of pedals.
Safety Considerations

  1. Positive exchange of controls
  2. Guard Controls in the event the student applies abrupt control inputs
  3. Maintain clearance for skids and tail rotor during maneuvering toward landing spot
  4. Never allow excessive heading changes
  5. Pay close attention to the collective.  Never allow the collective to be applied abruptly.  Emphasize dynamic rollover and how it relates to this maneuver.