Normal Takeoff and Climb

Objective

The student will demonstrate proficiency in planning and executing a normal takeoff and climb in a helicopter, meeting commercial pilot standards per FAA-S-ACS-16 CH.V.A. Upon completion, the student will:

• Explain effects of atmospheric conditions and wind on takeoff/climb performance (CH.V.A.K1)
• Describe factors affecting height/velocity diagram profiles (CH.V.A.K2)
• Select appropriate takeoff paths considering performance, wind, and available distance (CH.V.A.R1)
• Execute normal takeoffs maintaining runway centerline/takeoff path ±5 ft, airspeed within ±5 knots, heading ±5°, and Nr within normal limits (CH.V.A.S1-S12)

Content

Effects of Atmospheric Conditions on Takeoff and Climb Performance (CH.V.A.K1)

Density Altitude Impact: Commercial pilots must precisely calculate how density altitude degrades performance. High density altitude reduces available power, increases takeoff distance, decreases climb rate, and raises hover power requirements. Use the formula: Density Altitude = Pressure Altitude + [120 × (OAT - ISA Temperature)]. Every 1,000 ft increase in density altitude can reduce climb performance by 10-15%.

Wind Effects on Performance:

• Headwind: Increases translational lift onset speed, reduces ground roll distance, improves climb gradient over obstacles, provides better directional control during transition
• Tailwind: Delays translational lift, increases ground distance required, reduces climb gradient, creates control difficulties—avoid if possible per 14 CFR 91.13 (careless/reckless operation)
• Crosswind: Requires drift correction during climb-out, may necessitate asymmetric power application to maintain ground track, affects retreating blade side differently (wind from right in U.S. helicopters adds airflow to retreating blade)
• Zero Wind: Requires maximum power for translational lift, plan longer ground runs, consider surface taxi to build airspeed where appropriate

Temperature and Humidity: High temperature and high humidity both reduce air density. Humid air is less dense than dry air (water vapor displaces heavier nitrogen/oxygen molecules). Combined effects multiply—a 95°F day at 80% humidity performs worse than predicted by temperature alone.

Pressure Systems: Low-pressure systems reduce available power. Commercial operations require checking altimeter settings and calculating pressure altitude accurately. A 1” Hg decrease in pressure = approximately 1,000 ft increase in pressure altitude.

Factors Affecting Height/Velocity Diagram Profile (CH.V.A.K2)

Height/Velocity Diagram Purpose: The H/V diagram (found in RFM Section 5 or Limitations) defines combinations of altitude and airspeed where safe autorotative landing cannot be assured following engine failure. Commercial pilots must understand this is tested data specific to ideal conditions—real-world margins are tighter.

Factors Affecting Profile:

1. Gross Weight: Heavier weight expands the shaded “avoid” areas. Higher inertia requires more rotor energy to arrest descent. Maximum gross weight H/V diagrams show worst-case scenarios.

2. Density Altitude: High density altitude significantly expands avoided areas. Reduced air density means less autorotative rotor efficiency and reduced cushioning during flare. Some manufacturers publish multiple H/V diagrams for different density altitude ranges.

3. Wind: Headwind compresses the diagram (beneficial), tailwind expands it (detrimental). Crosswinds affect the low-altitude corridor asymmetrically.

4. Surface Type: Hard surfaces allow smaller avoided areas than water, soft terrain, or obstacles. The diagram assumes a prepared surface.

5. Pilot Technique: Reaction time, autorotation entry proficiency, and flare timing affect real-world survivability within charted areas.

Commercial Application: As a commercial pilot, you’ll operate for compensation/hire (14 CFR 61.133). You MUST avoid the H/V diagram’s shaded areas. During confined area operations, air tours, or external load work, plan entry/exit paths that minimize time in avoided areas. If you must penetrate briefly, do so at the narrowest points with maximum awareness.

Takeoff Path Selection (CH.V.A.R1)

Performance Considerations: Calculate takeoff distance required using RFM data adjusted for:

• Current gross weight
• Pressure altitude and temperature (density altitude)
• Wind component
• Surface condition (grass, asphalt, slope)

Commercial standard: Verify performance data supports the operation before attempting. If published data is unavailable for current conditions, use conservative estimates or decline the flight.

Available Distance Assessment:

• Measure takeoff area dimensions (length, width, approach/departure paths)
• Identify obstacles within departure path (trees, wires, buildings, towers)
• Calculate climb gradient required: (Obstacle Height in ft / Distance in ft) × 100 = Required gradient %
• Confirm helicopter can achieve gradient at current conditions with safety margin

Wind Considerations for Path Selection:

• Primary: Select path aligned with prevailing wind (headwind preferred)
• If multiple options exist, choose path with best obstacle clearance
• Avoid tailwind departures >5 knots unless no alternative exists
• Consider wind shifts during climb—departure direction may differ from surface wind

Confined Area Departures: Select path providing:

• Clearest obstacle-free corridor
• Ability to terminate takeoff if power loss occurs
• Alignment minimizing crosswind during critical phases
• Option to enter autorotation clear of obstacles

Effects of Environmental Factors (CH.V.A.R2)

Crosswind Effects (CH.V.A.R2a):

• Ground Phase: Crosswind from left (in U.S. helicopters) requires right cyclic to prevent drift, may require slightly more power to counteract translational tendency
• Transition Phase: Establish wind correction angle immediately upon leaving hover; anticipate need for coordinated cyclic/pedal inputs as airspeed increases
• Climb Phase: Maintain crab angle to track intended ground path; divided attention between ground track and airspeed
• Limits: Most helicopters limit crosswind operations to 17 knots for takeoff; verify RFM

Windshear (CH.V.A.R2b): Windshear during takeoff presents extreme hazard. Sudden headwind increase causes unexpected altitude gain and airspeed decrease—pilot may reduce collective, then experience sink when exiting shear. Sudden headwind loss causes altitude loss and airspeed increase. Avoidance is primary strategy: Do not depart when:

• PIREPs report windshear
• Weather conditions conducive to windshear exist (thunderstorms, frontal passage, temperature inversions, strong surface winds with light winds aloft)
• If encountered: maintain Nr, apply collective as needed to arrest descent, do not fixate on airspeed—altitude preservation is critical below 500 ft AGL

Tailwind (CH.V.A.R2c):

• Delays effective translational lift by 5-10 knots groundspeed
• Increases ground distance before becoming airborne
• Reduces obstacle clearance capability
• Creates illusion of climbing performance (high groundspeed, low airspeed)
• Commercial standard: Avoid tailwind takeoffs. If unavoidable, limit to 5 knots maximum, ensure adequate performance margin, brief rejected takeoff plan

Turbulence and Wake Turbulence (CH.V.A.R2d):

• Mechanical Turbulence: Wind flowing over/around obstacles creates downdrafts, updrafts, rotors. Expect within 10× obstacle height downwind. Avoid low-altitude flight through turbulent areas.
• Thermal Turbulence: Hot surfaces create rising air columns. Expect during hot afternoons over asphalt, buildings, desert.
• Wake Turbulence: Wingtip vortices from fixed-wing aircraft sink 500-1,000 ft, drift with wind. Avoid flight paths below/behind departing aircraft, especially heavy jets. Wait 2 minutes minimum for dissipation. Vortices are most hazardous during light wind conditions (<5 knots).

Surface Conditions (CH.V.A.R2e):

• Hard Surface (Asphalt/Concrete): Best performance, predictable ground effect, possible recirculation in confined areas
• Grass: Increased friction, uneven surface may cause dynamic rollover risk, tall grass reduces ground effect efficiency
• Gravel/Dirt: Brownout risk, FOD hazard to tail rotor, reduced skid friction
• Slope: Upslope takeoffs preferred (gravity assists acceleration), downslope increases ground run and delays translational lift
• Contaminated: Water, snow, ice reduce friction—anticipate sliding during pedal turns, increased takeoff roll

Abnormal Operations Planning (CH.V.A.R3)

Rejected Takeoff (CH.V.A.R3a): Brief before every takeoff: “If engine/transmission warnings activate before [specific point], I will reject—lower collective, maintain heading, complete shutdown checklist once stopped.”

Decision points:

• Before effective translational lift: Reject for any abnormal indication
• After ETL, before obstacle clearance: Reject only for catastrophic failures
• After obstacle clearance: Continue flight, land at nearest suitable area

Technique: Immediate lowering of collective, maintain heading control, avoid aggressive cyclic inputs that may cause mast bumping or rollover, use remaining Nr to cushion touchdown.

Powerplant Failure During Takeoff/Climb (CH.V.A.R3b):

Before ETL (Low hover): Minimal forward speed, minimal altitude—cushion landing with collective, accept hard touchdown to preserve rotor energy for directional control, maintain level attitude.

During Transition (10-40 knots, 20-100 ft AGL): Most critical phase—inside H/V diagram’s most dangerous area. Immediate actions: lower collective fully, maintain Nr with aft cyclic, level skids, use remaining energy for cushioning. Prioritize survivable landing over “perfect” autorotation.

After Clearing Obstacles (>500 ft AGL): Standard autorotation entry—lower collective, establish 60-70 KIAS (typical), maintain Nr 90-105%, select landing area, execute approach and landing per autorotation procedures.

Commercial Pilot Standard: You must brief passengers before passenger-carrying operations (14 CFR 91.107) and mentally rehearse abnormal procedures before each takeoff. This isn’t private pilot “awareness”—commercial operations demand immediate, correct responses.

Collision Hazards (CH.V.A.R4)

See and Avoid: Per 14 CFR 91.113, vigilance is required. During takeoff:

• Clear surrounding area before lifting to hover (360° scan)
• Verify departure path clear before initiating forward flight
• Maintain scan pattern: forward 80%, instruments 10%, surrounding area 10%
• Other aircraft have right-of-way if you’re overtaking
• Aircraft on final approach have right-of-way over departing traffic

Specific Threats:

• Birds: Most hazardous dawn/dusk, migrate in spring/fall, concentrated near water—delay departure or alter path if large flocks present
• Wildlife: Deer, coyotes may run toward departing helicopter—verify area clear
• Ground Vehicles: Communicate with ground personnel, verify vehicles stopped before departure
• Other Aircraft: Monitor CTAF/tower frequency, visually verify pattern clear, announce intentions

Controlled Airport Procedures:

• Read back all clearances including runway assignment
• Hold short until clearance received
• Verify correct runway assignment before departure
• Maintain tower contact throughout

Task Management and Situational Awareness (CH.V.A.R5)

Distractions: Common takeoff distractions include passenger questions, radio calls during critical phases, checklist interruptions, loose items in cockpit. Establish sterile cockpit below 500 ft AGL—brief passengers accordingly.

Task Prioritization:

1. Fly the helicopter (control, Nr, obstacle clearance)
2. Navigate (ground track, departure path)
3. Communicate (radio calls)
4. Manage systems (monitor instruments)

Loss of Situational Awareness Indicators:

• Uncertainty about helicopter position/altitude
• Fixation on single instrument/task
• Confusion about what to do next
• Missing radio calls or clearances

Prevention: Use standardized callouts (“Lifting to hover,” “Clear to depart,” “500 ft AGL”), maintain instrument scan, cross-check position against landmarks.

Disorientation: Vestibular illusions during takeoff include somatogravic illusion (acceleration feels like pitch-up, may cause pilot to push forward), false climb sensation during acceleration. Trust instruments, maintain visual horizon references during VFR flight.

Runway Incursion Avoidance (CH.V.A.R6)

Per FAA, runway incursions are any unauthorized entry onto active runways. Helicopters present unique risks—ability to hover-taxi, cross runways at unconventional points, operate from non-movement areas.

Avoidance Procedures:

• Read back all runway hold-short instructions
• Stop before all runway hold-short lines (never cross without clearance)
• If uncertain about position, STOP and query ATC
• Never accept ambiguous clearances (“taxi to” vs. “taxi to and hold short”)
• Use airport diagram during taxi, mark position continuously
• Enhanced monitoring at night, low visibility, complex airports
• If cleared to “line up and wait,” understand you are ON the runway—verify final approach clear visually

Helicopter-Specific Considerations:

• Verify taxi route does not cross active runways
• Understand difference between movement area (ATC clearance required) and non-movement area
• Hover-taxi requires same runway crossing clearances as surface taxi
• Air-taxi provides no exception to runway crossing procedures

Normal Takeoff Procedure

Pre-Takeoff:

1. Complete pretakeoff checklist (minimum: flight controls free and correct, instruments checked, engine instruments normal limits, governor engaged)
2. Obtain takeoff clearance at towered airports or announce intentions on CTAF
3. Brief takeoff: direction, abort criteria, emergency procedures, obstacle locations

Hover Positioning:

• Taxi to departure position
• Align helicopter with centerline (runway operations) or intended departure path (off-airport)
• Establish stabilized hover (2-5 ft skid height typical), verify wind direction and velocity
• Confirm takeoff power available (check manifold pressure/torque against performance data)
• Verify all instruments normal: Nr in green arc, engine RPM governed, temperatures/pressures normal

Takeoff Execution:

1. Verify area clear ahead and above
2. Smoothly apply forward cyclic to initiate forward movement—avoid abrupt inputs
3. Maintain hover altitude initially (do not climb prematurely)
4. Accelerate to effective translational lift (approximately 16-24 knots depending on wind)
5. Allow helicopter to climb naturally as ETL is achieved
6. Transition to normal climb attitude: cyclic slightly forward of cruise position, establish climb airspeed per RFM (typically Vy ±5 knots)
7. Maintain runway centerline or departure path with coordinated cyclic corrections for wind drift
8. Monitor Nr continuously—maintain within green arc (typically 90-105% Nr)
9. Clear obstacles by adequate margin—minimum 50 ft vertical clearance commercial standard
10. At 500 ft AGL (typical): transition to cruise climb, reduce power as appropriate, maintain Vy or Vx as situation requires

Crosswind Technique:

• Establish wind correction angle to maintain ground track
• Use coordinated cyclic/pedal—do not “slip” the helicopter
• Greater correction angles required at lower airspeeds
• Verify track over ground references continuously

Noise Abatement: Where procedures published (AIM 4-3-3, local airport notices), comply unless safety requires deviation. Typical procedures: avoid flight over noise-sensitive areas, maintain specific altitudes, use designated flight paths. Do not sacrifice safety for noise abatement.

Commercial Standards:

• Precision: ±5 knots airspeed, ±5° heading, ±5 ft lateral track
• Smoothness: No abrupt control inputs, passengers feel gradual acceleration
• Awareness: Continuous scan, obstacle clearance verified, Nr monitored
• Professionalism: Checklist discipline, clear radio communications, briefings conducted

Schedule

Equipment

Required References:

• FAA-S-ACS-16, Commercial Pilot Helicopter Airman Certification Standards (Area V, Task A)
• FAA-H-8083-21B, Helicopter Flying Handbook (Chapter 10: Takeoffs)
• Helicopter Rotorcraft Flight Manual (RFM) for training aircraft (Sections 2, 4, 5)
• 14 CFR Part 61 (§61.133 Commercial Pilot Privileges and Limitations)
• 14 CFR Part 91 (§91.13, §91.107, §91.113, §91.126, §91.129)
• AIM Chapter 4 (Air Traffic Control), Chapter 7 (Safety of Flight)
• Airport/Facility Directory or Chart Supplement for operating area

Training Materials:

• Sample height/velocity diagrams from multiple helicopter types
• Density altitude calculation aids/E6B
• Performance planning worksheets
• Airport diagrams (if conducting runway operations)
• Visual aid: H/V diagram poster or diagram showing avoided areas
• Visual aid: Takeoff profile illustration (hover-transition-climb phases)
• Whiteboard/tablet for density altitude calculations and diagram markup

Aircraft Equipment:

• Airworthy helicopter per 14 CFR Part 91
• Current weight and balance data
• Functional governor system
• All required instruments operative (minimum per 14 CFR 91.205)
• Intercom system for flight instruction

Safety Equipment:

• Current aeronautical charts for operating area
• Fire extinguisher
• First aid kit
• ELT (if required)

Instructor Actions

1. Begin ground instruction by stating the objective: “Today we’re covering normal takeoff and climb to commercial ACS standards—CH.V.A. By the end, you’ll perform takeoffs maintaining airspeed within 5 knots, heading within 5 degrees, and track within 5 feet. You’ll also explain how atmospheric conditions affect performance and what factors change the H/V diagram profile.”

2. Review density altitude calculations: “Density altitude combines pressure altitude and temperature effects. Use this formula or your E6B: Density Altitude = Pressure Altitude + [120 × (OAT - Standard Temperature)]. Let’s calculate today’s density altitude together.” Work through current conditions step-by-step.

3. Explain wind effects using analogy: “Think of translational lift like a water skier getting on plane. Headwind is like the boat going faster—you get on plane sooner. Tailwind is like the boat slowing down—you need more distance and speed to get up. In the helicopter, headwind gives us translational lift earlier, reducing the power and distance we need.”

4. Present height/velocity diagram: Display actual H/V diagram from training aircraft. “This shaded area represents combinations of height and airspeed where the manufacturer cannot guarantee a survivable autorotation. Notice two avoided areas: low altitude/low airspeed and low altitude/high airspeed. As commercial pilots, we MUST avoid operating here.”

5. Illustrate factors affecting H/V profile: “Heavier weight makes this worse—the diagram expands. High density altitude does the same thing—less dense air means less rotor efficiency during autorotation. Some diagrams show this explicitly.” Show multiple diagrams if available or sketch expansion on whiteboard.

6. Emphasize commercial application: “Private pilots need awareness of the H/V diagram. As commercial pilots operating for hire, you must plan every takeoff and landing to avoid these areas. If you’re doing confined area work or air tours, your departure path must minimize—ideally eliminate—time in the avoid areas.”

7. Discuss takeoff path selection: “Before every takeoff, evaluate: What’s my performance capability today? What distance do I have available? Where are obstacles? What’s the wind doing? Then select the path that gives you the best combination—usually into the wind with the clearest obstacle corridor.”

8. Address crosswind effects: “Crosswinds complicate takeoffs because you need drift correction while managing the transition through translational lift. Wind from the left in our helicopter [specify training aircraft] affects the retreating blade differently than wind from the right. You’ll feel this as different control pressures needed to maintain track.”

9. Teach windshear recognition and response: “Windshear during takeoff is extremely dangerous because you’re low and slow. If you encounter sudden airspeed changes, altitude deviations, or uncommanded pitch/roll—and you can’t clearly identify the cause—your primary goal is maintain Nr and don’t hit the ground. Add collective as needed to prevent descent. Avoidance is better—don’t launch into known shear conditions.”

10. Brief rejected takeoff procedures: “Before every takeoff, brief your abort criteria. Something like: ‘If I get any engine or transmission warning before reaching 50 feet and clearing that tree line, I will reject—collective down smoothly, maintain heading, controlled landing.’ This decision-making must happen before you start, not during.”

11. Explain powerplant failure scenarios: “The most dangerous time for engine failure is during transition, 20 to 100 feet up, accelerating through 20 to 40 knots. You’re in the heart of the H/V diagram. If the engine quits here, you must react instantly—collective down, aft cyclic to prevent noseover, get the skids level, use what little rotor energy you have for cushioning. It won’t be pretty, but it can be survivable.”

12. Emphasize see-and-avoid responsibility: “14 CFR 91.113—you are responsible for see-and-avoid, period. Before lifting to hover, clear the area 360 degrees. Before departing, verify your path is clear—not just forward, but above too. Maintain visual scanning throughout the takeoff.”

13. Review runway incursion avoidance: “Runway incursions kill people every year. As helicopter pilots, we have unique risks because we can hover-taxi across areas airplane pilots can’t go. Never cross a runway hold-short line without explicit clearance. If you’re uncertain where you are, stop and ask. Better to sound confused on the radio than have a collision.”

14. Demonstrate normal takeoff procedure step-by-step using model helicopter or hand gestures: “From a stabilized hover, verify the area clear, smoothly apply forward cyclic to begin moving. Don’t climb yet—stay at hover altitude initially while you accelerate. Around 16 to 24 knots, you’ll feel effective translational lift—the helicopter becomes more efficient, wants to climb. Let it climb naturally, transition to climb attitude, establish Vy, and track your departure path.”

15. Brief pre-flight planning session: “Now let’s plan a takeoff for current conditions. Calculate our density altitude, determine our hover power requirement, check performance charts for takeoff distance, identify our obstacles, and select our departure path. Walk me through it.”

16. Conduct pre-flight briefing before flight: “We’ll start with no-wind runway departures so you can focus on the fundamentals—smooth cyclic application, recognizing translational lift, establishing climb attitude. Then we’ll add crosswind to practice drift correction. I’ll demonstrate first, talking through each step, then you’ll practice with coaching.”

17. During flight demonstration, narrate continuously: “Lifting to hover… checking wind from windsock… aligned with centerline… all instruments green, Nr at 102%… area clear ahead and above… smoothly forward on the cyclic, beginning to move… maintaining two feet skid height as we accelerate… airspeed coming up through 10 knots… 15 knots, feeling translational lift now—helicopter wants to climb, I’m allowing it… transitioning to climb attitude, establishing 60 knots… scanning Nr, 100%, in the green… tracking the centerline, minimal wind so little correction needed… 50 feet, obstacles clear… continuing climb to 500 feet.”

18. During student practice, provide real-time coaching: “Smoothly forward… good… feel that shudder? That’s translational lift beginning… let it climb now… watch your Nr, you’re a little low, add a touch of collective… good recovery… you’re drifting left, slight right cyclic to maintain track… better… airspeed’s 65, bring it back to 60… excellent, right in the window.”

19. Correct common errors immediately: “You climbed too early—before building airspeed. That keeps you in the H/V diagram longer. Let’s try again: accelerate first at hover altitude, then allow the climb when you feel translational lift.”

20. Introduce crosswind takeoffs: “Now we’ll add crosswind from the left at 10 knots. As you lift to hover, you’ll need right cyclic to prevent drift. Once you start forward movement, establish a crab angle—nose into the wind—to track straight down the centerline. The correction angle increases as you slow down and decreases as you speed up.”

21. During crosswind practice, emphasize ground track: “Look at the centerline stripes—are you tracking straight? You’re drifting right, need more crab angle… good correction… now you’re tracking perfectly but look at your heading—you’ve turned 8 degrees. That’s your wind correction angle, and that’s fine. We track the ground path, not a heading.”

22. Address task saturation if observed: “I see you fixating on the airspeed. Use your scan: attitude outside, quick glance at airspeed, back outside, check Nr, back outside. The helicopter flies better when you look where you’re going.”

23. Conduct post-flight debrief systematically: “Let’s review your performance against ACS standards. Airspeed control: You maintained 60 knots ±3 on most takeoffs—well within the ±5 knot standard. Heading: One departure you drifted 7 degrees off centerline before correcting—that exceeded the ±5 degree tolerance. What happened there?”

24. Provide positive reinforcement with specific examples: “Your crosswind correction on that last takeoff was textbook—established crab immediately, tracked centerline within two feet, smooth transition to climb. That’s exactly the precision we need for commercial operations.”

25. Assign homework for next lesson: “Before next session, review H/V diagram factors in the RFM and think about how today’s conditions affected our performance compared to a cold, low-altitude day. Also review the rejected takeoff procedures we briefed—you should be able to explain your abort criteria before every takeoff.”

Student Actions

1. Actively participate in ground instruction: Ask questions about density altitude calculations, wind effects, and H/V diagram factors. Work through performance planning problems using real aircraft data.

2. Calculate density altitude for current conditions using E6B or electronic calculator. Verify calculations with instructor.

3. Review height/velocity diagram from aircraft RFM. Identify avoided areas and explain why each factor (weight, density altitude, wind, surface) expands or compresses the diagram.

4. Complete takeoff performance planning: Determine current gross weight, calculate density altitude, reference performance charts to find required hover power and takeoff distance, identify obstacles, and select departure path. Brief plan to instructor.

5. Explain risk management considerations including crosswind limits, windshear avoidance, tailwind effects, turbulence, surface conditions, and abnormal operations procedures.

6. Brief rejected takeoff criteria before each departure: decision point, abort procedure, touchdown technique.

7. Participate in pre-flight briefing: Review demonstration procedures, ask clarifying questions, acknowledge understanding of practice sequence.

8. Observe CFI demonstration carefully: Note control inputs, timing of collective/cyclic/pedal coordination, scan pattern, callouts, how instructor recognizes translational lift, and how drift correction is applied.

9. Perform pre-takeoff checklist before each practice takeoff: verify flight controls free and correct, check engine instruments, confirm governor engaged, verify Nr in green arc.

10. Obtain takeoff clearance or make appropriate CTAF announcements: “Podunk traffic, helicopter November 123 Delta departing runway 36, remaining in the pattern, Podunk.”

11. Execute normal takeoff:

    • Establish stabilized hover aligned with departure path
    • Verify wind direction from windsock or other indicators
    • Confirm takeoff power and all instruments normal
    • Clear area ahead and above
    • Smoothly apply forward cyclic to initiate forward movement
    • Maintain hover altitude during initial acceleration
    • Recognize effective translational lift (approximately 16-24 knots)
    • Allow natural climb after achieving ETL
    • Transition to normal climb attitude, establish Vy ±5 knots
    • Maintain Nr within green arc throughout
    • Maintain runway centerline or takeoff path ±5 ft lateral deviation
    • Apply crosswind correction as needed using coordinated cyclic inputs
    • Clear all obstacles with adequate vertical clearance (50+ ft)
    • Continue climb to 500 ft AGL or as directed

12. Maintain continuous scan pattern during takeoff: Outside (attitude/obstacles/ground track) 80%, instruments (airspeed/Nr/engine) 10%, surrounding area (traffic/hazards) 10%.

13. Call out deviations immediately: If airspeed exceeds ±5 knots or track deviates >5 ft, verbally acknowledge and correct: “Airspeed high, reducing collective slightly.”

14. Practice crosswind corrections: Establish wind correction angle to maintain ground track, adjust crab as airspeed changes, coordinate cyclic and pedal to prevent slipping.

15. Demonstrate rejected takeoff if requested: From slow forward movement (<10 knots), smoothly lower collective, maintain heading with pedals, allow helicopter to settle onto surface, complete shutdown checklist after full stop.

16. Self-critique each takeoff: Identify what went well and what needs improvement. Example: “That departure was good—I tracked centerline within three feet and held 62 knots. But I let Nr drop to 97% during the transition. I need to anticipate the Nr decay and add throttle sooner.”

17. Respond to instructor coaching: When CFI provides real-time corrections, acknowledge verbally and apply immediately: “Roger, adding right cyclic for drift… tracking centerline now.”

18. Ask questions during practice: If uncertain about a technique or experiencing difficulty, request clarification: “I’m having trouble judging when to start my climb—what should I feel or see?”

19. Participate in post-flight debrief: Honestly assess performance against ACS standards, identify specific areas needing improvement, ask questions about techniques.

20. Review ACS standards after flight: Compare personal performance to CH.V.A completion standards, identify tolerances met and exceeded.

21. Complete assigned homework: Review RFM H/V diagram, study atmospheric effects on performance, practice density altitude calculations, review rejected takeoff procedures.

22. Prepare for next lesson: Pre-study any assigned materials, arrive ready to discuss questions from this lesson, review performance planning procedures.

Completion Standards

The student demonstrates understanding of normal takeoff and climb procedures and risk management per FAA-S-ACS-16 CH.V.A when they can:

Knowledge Standards:

• Explain how density altitude, temperature, humidity, and pressure affect takeoff and climb performance, including specific effects of headwind, tailwind, and crosswind on translational lift and obstacle clearance (CH.V.A.K1)

• Calculate density altitude for given atmospheric conditions and determine impact on helicopter performance using RFM data

• Describe minimum five factors affecting height/velocity diagram profile: gross weight, density altitude, wind, surface type, and pilot technique, explaining how each factor expands or compresses the avoided areas (CH.V.A.K2)

• Identify shaded avoided areas on the H/V diagram and explain why combinations of altitude and airspeed in those areas prevent assured safe autorotative landing

Risk Management Standards:

• Select appropriate takeoff path based on current helicopter performance (calculated using weight, density altitude, wind), available distance (measured or estimated), wind direction and velocity, and obstacle locations, explaining the rationale for path selection (CH.V.A.R1)

• Explain effects of crosswind, windshear, tailwind, turbulence (including wake turbulence), and runway/surface conditions on takeoff performance and safety, including specific technique adjustments or operational restrictions for each (CH.V.A.R2)

• Brief comprehensive rejected takeoff procedures including decision points and powerplant failure responses for each phase: before ETL, during transition, and after obstacle clearance (CH.V.A.R3)

• Identify collision hazards during departure operations including other aircraft, birds, ground vehicles, and obstacles, and explain see-and-avoid procedures per 14 CFR 91.113 (CH.V.A.R4)

• Recognize distractions, correctly prioritize tasks (fly, navigate, communicate, manage systems), describe loss of situational awareness indicators, and explain disorientation illusions during takeoff (CH.V.A.R5)

• Demonstrate understanding of runway incursion avoidance procedures including hold-short line compliance, clearance read-backs, position verification, and movement/non-movement area distinctions (CH.V.A.R6)

Skill Standards:

Student consistently performs normal takeoffs meeting ALL the following criteria per CH.V.A:

• Completes appropriate checklist (pre-takeoff items verified) before each departure (CH.V.A.S1)

• Makes correct radio calls at appropriate times: CTAF position/intention announcements or towered airport clearance requests/read-backs (CH.V.A.S2)

• Verifies assigned/correct runway visually and by reference to airport diagram before taxiing onto runway (CH.V.A.S3)

• Determines wind direction accurately using windsock, tetrahedron, tower reports, or environmental indicators (water ripples, smoke, vegetation movement) (CH.V.A.S4)

• Clears area with systematic 360° scan before entering takeoff position, taxis into position properly, and aligns helicopter on runway centerline ±5 ft or with intended takeoff path (CH.V.A.S5)

• Establishes stabilized hover (2-5 ft skid height, ±5 ft position, Nr in green arc) or stabilized surface position prior to takeoff in headwind and crosswind conditions (CH.V.A.S6)

• Confirms takeoff power available (manifold pressure/torque checked against performance data) and all instrument indications normal (Nr, engine RPM, temperatures, pressures) before initiating forward movement (CH.V.A.S7)

• After clearing all obstacles by minimum 50 ft vertical clearance, transitions to normal climb attitude (cyclic slightly forward of cruise), establishes climb airspeed within ±5 knots of published Vy or instructor-specified speed, and applies appropriate climb power setting (CH.V.A.S8)

• Maintains powerplant and main rotor Nr within normal limits (green arc parameters, typically 90-105% Nr) throughout all phases of takeoff and climb with no exceedances (CH.V.A.S9)

• Maintains proper ground track with appropriate crosswind correction (crab angle established, coordinated flight—no slip), tracking runway centerline or departure path within ±5 ft lateral deviation and ±5° heading from intended track throughout climb (CH.V.A.S10)

• Complies with published noise abatement procedures when applicable (follows designated flight paths, altitude restrictions, area avoidance) unless safety requires deviation (CH.V.A.S11)

• Uses runway incursion avoidance procedures correctly: reads back hold-short instructions, stops before hold-short lines, verifies clearances before runway entry, queries ATC when uncertain about position or clearance (CH.V.A.S12)

Overall Commercial Standard:

Student performs normal takeoffs with precision, smoothness, and situational awareness appropriate for commercial operations. Control inputs are coordinated and deliberate. Performance parameters (airspeed ±5 knots, track ±5 ft, heading ±5°, Nr within limits) are maintained consistently without exceeding tolerances. Student demonstrates complete understanding of risk management considerations, makes sound aeronautical decisions regarding path selection and abort criteria, and maintains professional communication throughout the operation.

Unsatisfactory Performance:

Any of the following constitutes unsatisfactory performance requiring additional training:

• Exceeds airspeed tolerance (>5 knots deviation from target)
• Deviates >5° from intended heading or >5 ft from intended ground track
• Allows Nr to exceed green arc limits
• Fails to recognize or correct for wind drift
• Inadequate obstacle clearance (<50 ft vertical)
• Failure to complete checklists or verify clearances
• Inability to explain atmospheric effects on performance or H/V diagram factors
• Does not recognize or appropriately manage risk factors