Most student pilots dread autorotations because they arrive unprepared. You won't. Your edge is this guide — studied until every phase is wired into muscle memory before you step into that cockpit.
Most students freeze on their first auto because the helicopter suddenly feels like it's falling, a horn goes off, and they have no mental model of what comes next. The panic comes from the unknown — not from the maneuver itself.
Here's the truth: autorotation is controlled gliding flight. The helicopter does not fall. It descends at roughly 1,500 fpm — about the same as a fast elevator. You have time. What you don't have is time to think. That's why you're studying now.
Every autorotation has exactly four phases. Know their names. Know what your job is in each. Never confuse them.
Your CFI's card defines the purpose and objectives of autorotation with power recovery as follows:
- PURPOSE: To enter and perform an autorotation in the event of an engine failure, engine fire, drive system failure, SWP, LTE, or ditching.
- OBJECTIVE 1: To enter by transiting from downward airflow to upward airflow — this is the physics of autorotation entry.
- OBJECTIVE 2: To glide to target.
- OBJECTIVE 3: Recovery to hover over target.
· 65 kts, 100% RPM during glide — tolerance plus/minus 5 KIAS
· 40' AGL Flare — tolerance plus/minus 5'
· 8' AGL Deep Flare — tolerance plus/minus 2'
- Read the Physics section first — understand WHY before you memorize WHAT
- Study Entry, Glide, Flare, Touchdown in order, one phase per session
- Read the Eye Scan section — visualize exactly where your eyes go at each phase
- Study the Altitude Map — build a mental movie of the entire maneuver from 700 ft AGL to touchdown
- Read every Common Mistake — know what not to do before you do it
- Lock in the Memory Items — recite them out loud until they flow without effort
- Close your eyes and mentally fly the entire autorotation from entry to touchdown
- Repeat that mental flight until it feels boring — that's when you know you're ready
You cannot master what you don't understand. These concepts will make everything else in this guide make sense — and will help you correct your own mistakes in the air.
When the engine fails and you lower collective, the helicopter descends. As it descends, air flows upward through the rotor disk — from below. This upward airflow drives the rotor blades, keeping them spinning. Think of a maple seed falling — it spins as it falls because of the air flowing past its wings.
The rotor is divided into three aerodynamic regions during autorotation:
In a powered helicopter, the engine provides all the energy. In autorotation, you are managing three energy sources:
Understanding this cause-and-effect map means you will never "chase the needle" in the air:
| Control Input | Effect on Rotor RPM | Why |
|---|---|---|
| Lower collective | RPM increases | Reduces blade pitch, less drag, blades spin faster |
| Raise collective | RPM decreases | Increases blade pitch, more drag, blades slow down |
| Aft cyclic (flare) | RPM increases | Tilts disk aft, relative airflow changes, drives rotor harder |
| Forward cyclic | RPM decreases | Reduces angle of attack on blades, less driving force |
| Increase airspeed | RPM increases (initially) | More airflow through rotor disk |
| Decrease airspeed | RPM may decrease | Less airflow, use collective to compensate |
Your CFI's card lays out the exact RPM cause-and-effect chain and all factors that will affect your RPM during the maneuver:
- Up collective, pitch angle increases, drag increases, RPM decreases
- Down collective, pitch angle decreases, drag decreases, RPM increases
- Make a small adjustment, then wait for the needle to stabilize before making another input
- Do NOT move the collective until rotor RPM is on the desired RPM — chasing the needle causes oscillations and over-correction
- Turning bank — bank angle loads the rotor, RPM increases in turns
- Wind — headwind increases airflow through rotor, RPM increases
- Fore-aft cyclic — flare (aft cyclic) increases RPM; forward cyclic decreases RPM
- Up-down collective — as described above
- Air density — thinner air (high DA, hot days at TOA) = less airflow = lower RPM tendency
- 90% RPM — lower RPM has slower VSI (slower descent rate, less distance covered)
- 75 KIAS — faster speed glides further (more horizontal distance per foot of altitude)
The entry is the most critical phase. You have 1–2 seconds. Your left hand moves before your brain finishes its thought. This is pure reflex — built through repetition and mental rehearsal.
Your CFI's card labels this phase "Entering" and describes two steps before the glide is established:
- Before entry — you are straight and level with a full cross check completed.
- Aft cyclic to maintain same attitude by looking at the horizon
- Full down collective for flat pitch to avoid blade stall
- Right pedal to center trim strings
- Up collective ~1" as passing 95% rotor RPM to maintain rotor green arc
- 65 KIAS with cyclic — establish glide airspeed
- Use pedals to center trim strings — coordinated flight throughout
Setup (before your CFI simulates engine failure)
- Altitude— 500–700 ft AGL into the wind at 70–75 KIAS
- Left hand on the collective at all times
- Right hand on cyclic, feet lightly on pedals in trim
The Moment of Entry
- COLLECTIVE— LOWER SMOOTHLY TO FULL DOWN over ~1 second. First and most critical move. Do NOT slam it.
- AFT CYCLIC— APPLY SIMULTANEOUSLY — just enough to prevent the nose from dropping. The power-on attitude at 70 kt IS the power-off glide attitude in the R22.
- RIGHT PEDAL— APPLY to maintain trim. As torque disappears the nose yaws left. More right pedal here than any other maneuver.
- THROTTLE— REDUCE TO IDLE / DETENT (in practice autos). Do NOT roll past the detent spring.
- RPM BUILD— WATCH FOR OVERSPEED — be ready to raise collective slightly to catch the build and keep RPM below 110%.
You are in the right seat. Engine fails. The low-RPM horn fires. Your left hand — already resting on the collective — immediately begins lowering. Smooth. Down. As your left hand moves down, your right wrist gently pulls back — just enough to hold the nose where it is. Your right foot pushes forward on the right pedal. Your eyes stay on the horizon outside. The R22 pitches slightly nose down and begins its descent. The horn silences as RPM recovers into the green. You are in autorotation. You have done your job.
When you lower the collective, the nose wants to drop — even without forward cyclic. Collective pitch creates lift; when you remove it, the nose falls. The aft cyclic on entry is not trying to pull the nose up — it's just compensating for what the collective removal would otherwise do to attitude.
Collective and cyclic work together on entry. Down collective, simultaneous aft cyclic, nose stays where it was. A smooth entry with no attitude change. That is the goal.
Entry is complete when ALL of the following are true:
- Rotor RPM is in the green arc (90–110%)
- Tachometer needles are split (engine RPM separated from rotor RPM)
- Airspeed is stabilizing toward 65 KIAS
- Helicopter is in trim (no yaw, coordinated flight)
- You have established a descent attitude
Now begin your scan:
OUTSIDE, Airspeed, RPM, OUTSIDE, Select Landing Zone
The glide is your working phase. You are managing energy, scanning instruments, selecting your landing zone, and maneuvering into position — all while maintaining a stable descent.
Your CFI's card labels this phase "Gliding" and specifies the exact standard she expects:
- Glide at 65 KIAS, 100% RPM — tolerance plus/minus 5 KIAS
- Use aft cyclic to reduce vertical and horizontal speed to proper descent rate and RPM
- If RPM goes to 110% — up collective to avoid overspeed
- Up collective causes climb and hard landing — only raise enough to control RPM
- Down collective causes faster descent and tail strike or hard landing — do not over-lower
- AIRSPEED— STABILIZE AT 60–70 KIAS — cyclic controls airspeed. 65 KIAS gives max glide distance.
- ROTOR RPM— MONITOR 90–110% — small collective inputs. Down = more RPM. Up = less RPM.
- TRIM— MAINTAIN — pedals keep you coordinated throughout the glide.
- LANDING ZONE— SELECT IMMEDIATELY — pick the best area. Into the wind if possible.
- MANEUVER— AS NEEDED — align over your landing zone with the wind. Complete all turns before 100 ft AGL.
- MAYDAY— 121.5 MHz if altitude and situation permit — not at the expense of flying the aircraft.
Your landing zone should appear to rise slowly toward you in the windshield as you descend. If the spot moves UP the windshield — you will overshoot. If it drops DOWN — you will undershoot.
Ideal landing area characteristics (in priority order):
- Into the wind — reduces groundspeed at touchdown
- Flat, firm, unobstructed surface
- Clear approach path — no wires, trees, or obstacles
- Long enough for a brief ground run if needed
You may need to turn to align with your landing zone. Here's what happens to RPM in a turn — and how to manage it:
- Bank angle increases rotor RPM — the disk loads more and drives harder
- Maximum bank angle in autorotation: 40 degrees
- Use collective to control RPM increase during the turn — raise slightly if RPM climbs
- When rolling out — LOWER COLLECTIVE to avoid low-RPM as the disk unloads
- Complete all turns before 100 ft AGL — aligned with your landing zone
The flare is the pivot point of the entire maneuver. You are converting forward speed into reduced descent rate. Timing is everything. Too early and you waste energy with altitude remaining. Too late and you hit the ground fast.
Your CFI's card is precise: the flare begins at 40' AGL with a tolerance of plus/minus 5'. She expects the deep flare at 8' AGL plus/minus 2'. Here is exactly what she expects at the flare:
- At 40' AGL — Flare. Aft cyclic to reduce vertical and horizontal speed to proper descent rate and RPM
- If RPM goes to 110% during flare — up collective to avoid overspeed
- Up collective during flare causes climb and hard landing — use sparingly
- Down collective during flare causes faster descent and tail strike or hard landing
Flare Goal:
Arrive at 8 ft AGL with airspeed reduced to approximately 20 knots or less groundspeed. Descent rate significantly reduced. You have built RPM in the rotor — that RPM is now your cushion resource.
At 40 ft, the ground is rushing toward you. Your eyes are OUTSIDE — looking at the ground ahead of you, not straight down. You're reading ground rush to judge your descent rate. As you apply aft cyclic, the nose comes up slightly and your windshield view changes — less sky above, more horizon. The ground rush slows. You are spending your airspeed.
- Look ahead toward the landing zone — not straight down
- Use peripheral vision to judge height above ground
- Ground rush slowing = your flare is working
- Instruments at this point: one quick glance at RPM only — everything else is outside
| Condition | Effect on Flare | Your Adjustment |
|---|---|---|
| Strong headwind | Less flare needed — wind slows groundspeed | Shallower flare |
| Light wind / calm | More flare needed — higher groundspeed | Slightly more aggressive flare |
| High density altitude (hot TOA summer) | Less effective flare — thinner air | More aggressive flare earlier |
| Light aircraft weight | Less inertia — responds faster to cyclic | More gradual inputs |
| Too much airspeed into flare | Risk of ballooning upward | Be smooth — not abrupt |
| Too little airspeed into flare | Insufficient energy to arrest descent | Maintain 60–70 KIAS in glide |
The final seconds. You are spending the last of your stored energy — rotor RPM — to cushion the landing. Timing the collective pull is the most practiced skill in helicopter training.
Your CFI's card covers the power recovery and level-off sequence in detail. These are the exact actions she expects at this phase:
- Gentle roll on throttle to bring engine RPM to green — do not snap it open
- Too fast on throttle causes engine overspeed
- Simultaneously up collective to maintain 5' — coordinate throttle and collective together
- Left pedal for straight heading as power increases
- Forward cyclic to level — return to level attitude
- Left cyclic may be needed to counter right drifting tendency
- Too slow on recovery, hard landing, rotor stall, SWP
- Established in a stable hover at 5' AGL over target — recovery complete
· Initiating recovery too late, requiring rapid controls
· Failure to obtain and maintain level attitude near surface
· Failure to coordinate throttle and collective — engine overspeed or low rotor RPM
· Failure to coordinate pedals with power increase
· Late engine power engagement causing excessive temps, torques, or RPM droop
· Failure to go around if not within limits
- At ~8 ft AGL — CYCLIC FORWARD to level the helicopter. Return from flare attitude to level. Nose must NOT be high at touchdown — tail rotor strike hazard.
- At ~3 ft AGL — COLLECTIVE UP smoothly and progressively — using stored rotor RPM to cushion the remaining descent.
- Maintain SKIDS LEVEL — do NOT let one skid touch first. Dynamic rollover risk. Use cyclic to keep level.
- Maintain NOSE STRAIGHT AHEAD — pedals align you with landing direction at touchdown.
- After touchdown — LOWER COLLECTIVE FULLY immediately to remove pitch from the blades.
- Do NOT apply aft cyclic at touchdown or during ground roll — risk of blade contact with tailcone. POH prohibits this.
In early training, your CFI will end the autorotation with a power recovery rather than a full touchdown. Here's how that goes:
- At the start of the flare — THROTTLE— CRACK slightly (your CFI may handle this initially)
- THROTTLE— ROLL PAST 80% smoothly and let the governor bring RPM to 104%
- When needles rejoin — COLLECTIVE UP to arrest descent and establish a climb at 60 KIAS
- Do not rush the throttle — smooth application prevents engine shock-loading and RPM overshoot
- Entry was smooth — RPM never dropped below 90%
- Glide was stable — 60–70 KIAS, RPM 90–110%, in trim
- Landing zone was selected early and reached
- Flare was smooth — not abrupt — airspeed decayed progressively
- Level-off happened at 8 ft — nose straight, skids level
- Collective cushion was smooth and well-timed — RPM available at touchdown
- Touchdown was firm but controlled — skids level, nose straight
- Collective lowered immediately after touchdown
This is what separates experienced pilots from students — knowing exactly where to look, for how long, and when. In autorotation, your eyes are your most important instrument.
The horizon outside your windshield is your attitude indicator. In VFR autorotation, you fly attitude by reference to the horizon — not the instruments. The instruments confirm what your eyes already know. The optimal scan ratio:
In practice: approximately 17 seconds outside for every 3 seconds on instruments. During flare and touchdown, this shifts to nearly 100% outside.
Phase 1 — Entry (first 1–2 seconds)
Eyes: OUTSIDE on the horizon — you need to hold attitude. The nose wants to drop. You can only hold it by watching the horizon, not the instruments. Aft cyclic is guided by what you see outside.
Phase 2 — Glide (most of the descent)
Eyes: OUTSIDE primary — attitude, horizon, scanning for landing zone. Periodic inside glances: OUTSIDE (horizon + LZ), Airspeed, RPM, OUTSIDE. Each glance 1–2 seconds max. Return outside. Repeat every 5–8 seconds.
Phase 3 — Flare (40 ft to 8 ft AGL)
Eyes: ALMOST ENTIRELY OUTSIDE — judging altitude by ground rush and visual height cues. Peripheral vision tells you attitude. One quick RPM glance is acceptable — nothing else. Instruments cannot time a flare. Only your eyes can.
Phase 4 — Level-Off and Touchdown (8 ft to ground)
Eyes: 100% OUTSIDE — look at the landing zone ahead of you. Peripheral vision judges height. You judge 3 feet above the ground by feeling and sight — not the altimeter. No instrument scan during this phase.
In the R22 during autorotation, three instruments are worth checking — in this priority order:
Outside, airspeed check, RPM check, outside, find the LZ, outside.
Each check is 1–2 seconds. Everything else is outside. This rhythm keeps you from fixating inside.
During flare and touchdown, you judge height visually. Here's how experienced pilots do it:
- Look forward and slightly down toward your landing zone — not directly below you
- Ground rush increasing rapidly = you're getting close — begin flare
- Peripheral vision gives you height — your brain judges 3–10 feet well if you train it
- Reference points near the landing zone (bushes, painted lines, pavement texture) help calibrate height
- Avoid staring straight down — causes disorientation and makes height judgment worse
These are the most frequently cited errors by R22 CFIs. Read them. Visualize yourself NOT making them. Each mistake listed is one you'll recognize and avoid.
These are the exact common errors listed on your CFI's Autorotation with Power Recovery card:
- Initiating recovery too late, requiring rapid controls
- Failure to obtain and maintain level attitude near surface
- Failure to coordinate throttle and collective, resulting in engine overspeed or low rotor RPM
- Failure to coordinate pedals with power increase
- Late engine power engagement causing excessive temps or torques, or RPM droop
- Failure to go around if not within limits
Cause: Instinct. Surprise. Freeze response.
Fix: Left hand always rests on collective. Rehearse: "Engine fails, hand goes DOWN." Visualize until automatic.
When collective goes down, the nose pitches forward. Students who forget aft cyclic see the nose drop — airspeed and RPM build, and now they're chasing both all the way down.
Fix: "Down collective, simultaneous aft cyclic." Together, not sequentially. The power-on attitude IS the autorotation attitude. Hold it.
As torque disappears, the fuselage yaws left. This is the most right pedal you'll use in any maneuver. Students consistently underestimate how much is needed.
Fix: Right pedal is part of the entry package — collective down, aft cyclic, right pedal — all together.
Nervous students hide inside the cockpit, staring at the tach or airspeed. Attitude wanders, they don't see where they're going, and they miss height cues for the flare.
Fix: Quick glances inside, 1–2 seconds max per instrument, then back outside. Build this on every normal flight, not just autos.
RPM high: student slams collective up. RPM drops too far. Slams it down. RPM spikes. Repeat. This porpoising makes for a miserable and dangerous glide.
Fix: Small, smooth inputs. Wait 2–3 seconds to see the effect. Thermostat, not light switch.
Too early: helicopter balloons, flies back up, loses kinetic energy with altitude remaining. When it descends again, nothing left to cushion with. Hard landing.
Fix: "Introduce the flare. If nothing happens, flare more." Gradual, progressive, like an airplane landing. The R22 has more energy than you think.
After the flare, the nose is high. Students forget forward cyclic to level before the skids hit. Touching down nose-high is a tail rotor strike waiting to happen. POH: do NOT apply aft cyclic at touchdown.
Fix: Forward cyclic at 8 ft. Level. THEN cushion. Sequence: Flare, Level, Cushion, Touch.
Too early: RPM depleted before skids contact ground. Too late: skids hit before cushion is applied. Both are hard landings.
Fix: "3 feet, smooth up, ride it down." A smooth continuous pull — not a pop — ending as the skids contact.
Students who focus too long on cockpit management look up too late and make rushed, large changes to reach their zone — often with insufficient altitude.
Fix: Zone selection in the first 5–10 seconds of the glide. Pick a spot. Commit. Manage the glide toward it.
After touchdown the helicopter may skip or bounce if collective is not lowered. Collective still up means pitch on the blades — the helicopter can re-lift and move unexpectedly.
Fix: As skids contact, immediate smooth lowering of collective, full down. Part of the landing, not an afterthought.
This is your mental movie. Read it until you can play it in your head with your eyes closed. Every altitude. Every action. Every eye position.
The R22 POH contains a Height-Velocity (H-V) diagram showing combinations of altitude and airspeed that do NOT provide sufficient time or energy to complete a successful autorotation. This is the "dead man's curve."
These are the items you recite until they're effortless. Say them out loud. Recite them in the car. In the shower. Before you sleep. Your CFI will ask. Your life may one day depend on them.
- Lower collective immediately to maintain rotor RPM
- Establish steady glide at approximately 65 KIAS
- Adjust collective to keep RPM in the green (97–110%), or full down if light
- Select landing spot and, if altitude permits, maneuver into the wind
- Attempt restart at pilot's discretion if time permits
- Flare at ~40 ft to reduce rate of descent and forward speed
- Level at ~8 ft, then cushion with collective at touchdown; lower collective fully once down
- Very low altitude leaves no time to establish a full autorotation — the emphasis shifts to a cushioned touchdown
- Apply aft cyclic as needed to reduce forward speed, then cushion the landing with collective using stored rotor inertia
- Keep the aircraft level and heading straight; avoid large control movements
- This is the H-V "avoid" region logic — know your takeoff and approach profiles to stay out of it
- Phase 1 — ENTRY: Down, Attitude, Pedal. RPM into the green.
- Phase 2 — GLIDE: 65 and 100. Pick the spot. Small inputs.
- Phase 3 — FLARE: 40 feet. Aft cyclic. Bleed speed, build RPM.
- Phase 4 — TOUCHDOWN: Level at 8, cushion at 3. Recovery to 5-foot hover.
| Item | Value |
|---|---|
| Best glide airspeed | 65 KIAS |
| Glide RPM target | 100% |
| Rotor green arc | 90–110% |
| Entry airspeed | 70–75 KIAS |
| Flare initiation | ~40 ft AGL (plus/minus 5) |
| Deep flare / level | ~8 ft AGL (plus/minus 2) |
| Collective cushion | ~3 ft AGL |
| Recovery hover | 5 ft AGL over target |
| Max bank in auto | 40 degrees |
| Descent rate | ~1,500 fpm |
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