ACS Alignment

FAA-S-ACS-16 — Commercial Pilot, Rotorcraft–Helicopter · Area of Operation IV. Hovering Maneuvers · Task: E — Slope Operations

CH.IV.E.K1 — slope landing/takeoff aerodynamics & limits CH.IV.E.S1 — select a suitable slope CH.IV.E.S2 — perform a slope landing & takeoff CH.IV.E.R1 — dynamic rollover & mast bumping on slopes

⚑ FLAG (Walter): confirm Task letter (E) and codes, and the R44 maximum slope-angle limit from the POH.

Slope Operations

Set down and depart on sloping ground without crossing the rollover line — the cyclic discipline that keeps you upright.

By the end of this lesson you can:

Explain slope-landing aerodynamics and the dynamic-rollover relationship.
Select a suitable, safe slope within the aircraft’s limit.
Perform a slope landing (upslope skid first) and a slope takeoff smoothly.
Recognize the cues that you are approaching the rollover limit and abort correctly.

1 · The technique

Approach to a stable hover over the spot. For the landing, lower the collective slowly so the upslope skid touches first, then continue down very gradually, moving the cyclic into the slope to keep the rotor disc level while the downslope skid settles. Keep the helicopter light on the skids and be ready to lift back to a hover if the bank approaches the limit. The takeoff reverses the process: smoothly raise collective, keeping the disc level, until the helicopter lifts to a hover.

2 · Selecting a slope & the limit

Choose firm ground, free of obstacles in the rotor arc, with a slope within the POH limit. Exceeding the slope limit or mishandling cyclic risks dynamic rollover — once past the critical angle, rotor thrust continues the roll and recovery is impossible. Know your R44’s maximum slope angle and never push it.

3 · Cues & abort

Watch the cyclic position and bank: if you are running out of cyclic into the slope or the helicopter feels like it wants to pivot on a skid, lower collective decisively and return to a hover — do not try to save it with opposite cyclic alone. Smoothness and patience are everything on a slope.

4 · Watch

Curated reference clip — “Slope Landing Lesson Helicopter Online Ground School,” Helicopter Online Ground School LLC (YouTube), verified via oEmbed. Embedded with the creator's player; we don't host or alter it.

5 · Reference sources

Use the authoritative references

📄 Helicopter Flying Handbook (FAA-H-8083-21) — Slope Operations 📄 Robinson R44 POH — Limitations (slope) & Safety Notices

Your aircraft: the maximum slope angle and any related cautions are aircraft-specific — note the R44 POH limit and the relevant Robinson Safety Notices.

✍️ Fill in for the aircraft you fly your R44 maximum slope angle and the dynamic-rollover/cyclic cautions — look these up in the R44 POH (Limitations) and Safety Notices and confirm with your CFI.

⚑ FLAG (Walter): the R44 is a VFR-certificated piston helicopter; confirm the aircraft/figures the student actually flies and that all numbers come from the current R44 POH.

Risk management (the “Consider”): the slope killer is dynamic rollover — crossing the critical angle while a skid is in contact and applying lateral cyclic into the slope. Lower collective slowly, keep the disc level, never exceed the slope limit, and the instant bank approaches the limit, decisively lower collective and lift off — opposite cyclic alone will not save it.