Normal Takeoff and Climb

Objective

Upon completion of this lesson, the CFI candidate will demonstrate the knowledge, risk management, and instructional skills necessary to teach normal takeoff and climb procedures in a helicopter. The candidate will be able to explain atmospheric effects on takeoff performance, discuss H/V diagram factors, identify common errors, and demonstrate proper instructional techniques while conducting and teaching a normal takeoff and climb according to the standards outlined in ACS task HI.IX.A.

Content

Atmospheric Conditions and Takeoff Performance (HI.IX.A.K1)

Atmospheric conditions significantly affect helicopter takeoff and climb performance through their impact on air density and power requirements:

Density Altitude Effects:

• Higher density altitude reduces air density, decreasing rotor efficiency and engine power output
• For every 1000 feet of density altitude increase, expect approximately 3% power loss
• Hot, humid, high altitude conditions create the most challenging takeoff scenarios
• Use the analogy: “Thin air is like trying to grab handful of fog instead of thick rope”

Wind Effects on Performance:

• Headwinds improve effective translational lift (ETL) earlier, reducing power requirements
• Tailwinds delay ETL, requiring more power and longer ground runs
• Crosswinds create asymmetric lift across the rotor disc, affecting control response
• Gusty conditions can cause rapid power requirement changes during transition

Height/Velocity (H/V) Diagram Factors (HI.IX.A.K2)

The H/V diagram represents combinations of height and airspeed from which autorotation may not result in a safe landing:

Factors Affecting H/V Profile:

• Gross weight: Heavier aircraft have larger avoid areas due to higher descent rates
• Density altitude: Higher density altitude expands the avoid area upward and rightward
• Center of gravity: Aft CG positions can affect autorotation characteristics
• Aircraft configuration: External loads or open doors affect drag and performance
• Wind conditions: Headwinds can reduce the avoid area, tailwinds expand it

Instructional Key Points:

• The “dead man’s curve” concept helps students visualize risk areas
• Low altitude/low airspeed and high altitude/low airspeed combinations are most critical
• Normal takeoff profiles are designed to minimize time spent in avoid areas

Common Errors Related to Normal Takeoff and Climb (HI.IX.A.K3)

During Hover Phase:

• Insufficient power check before attempting takeoff
• Failure to establish stable hover with proper altitude and attitude
• Poor heading control during hover taxi or hover positioning

During Transition Phase:

• Excessive nose-low attitude during acceleration
• Inadequate right pedal to compensate for increasing torque
• Failure to maintain proper ground track during crosswind conditions
• Rushing the transition without allowing airspeed to build properly

During Climb Phase:

• Climbing too steeply, sacrificing airspeed for altitude
• Failure to maintain optimal climb airspeed (Vy)
• Poor power management during climb
• Inadequate obstacle clearance planning

Risk Management Considerations

Takeoff Path Selection (HI.IX.A.R1): Consider helicopter performance limitations, available distance, surface conditions, and wind when selecting takeoff path. Always plan for the unexpected engine failure scenario.

Wind Effects Management:

• Crosswinds (HI.IX.A.R2): Require drift correction and may affect control response asymmetrically
• Windshear (HI.IX.A.R3): Sudden wind changes can cause rapid performance variations requiring immediate pilot response
• Tailwinds (HI.IX.A.R4): Delay ETL, increase ground speed, and may require longer acceleration distances
• Turbulence (HI.IX.A.R5): Including wake turbulence from other aircraft can cause sudden control inputs and performance changes

Surface Conditions (HI.IX.A.R6): Evaluate runway or departure point surface for contamination, slope, or obstacles that might affect takeoff performance or safety.

Abnormal Operations Planning:

• Rejected Takeoff (HI.IX.A.R7): Have clear decision points and procedures for aborting takeoff
• Powerplant Failure (HI.IX.A.R8): Brief autorotation entry procedures and landing options along takeoff path

Additional Risk Factors:

• Collision Hazards (HI.IX.A.R9): Maintain vigilance for other aircraft, vehicles, or obstacles
• Distractions and Situational Awareness (HI.IX.A.R10): Use proper task prioritization and maintain orientation
• Runway Incursion Avoidance (HI.IX.A.R11): Follow proper communication and clearance procedures at controlled airports

Teaching Methodology

When instructing normal takeoff and climb, emphasize the sequential nature of the maneuver and the importance of stable flight attitudes. Use the building block approach: hover proficiency leads to smooth transitions, which enable safe climbs. Demonstrate the cause-and-effect relationships between control inputs and aircraft response during each phase.

Schedule

Equipment

Required References:

• FAA-H-8083-21 Helicopter Flying Handbook
• FAA-H-8083-4 Helicopter Instructor’s Handbook
• Aircraft Flight Manual/Pilot’s Operating Handbook
• Current sectional chart for local area

Materials and Visual Aids:

• H/V diagram for aircraft type
• Wind direction indicator or windsock
• Whiteboard or tablet for sketching wind triangles
• Performance calculation worksheets
• Airport diagram (if applicable)

Aircraft Equipment:

• Airworthy helicopter appropriate for training
• Current weight and balance documentation
• All required instruments and radios operational

Instructor Actions

The CFI candidate demonstrates instructional competency by:

1. Conducting comprehensive pre-takeoff briefing covering wind conditions, performance calculations, and emergency procedures specific to current conditions

2. Demonstrating proper checklist usage while explaining the importance of each item and when deviations might be necessary

3. Teaching wind assessment techniques both with and without visible wind indicators, including interpretation of surface wind versus wind aloft

4. Showing proper hover establishment and assessment while explaining power requirements, control positions, and stability indicators

5. Demonstrating the takeoff sequence with continuous explanation of control inputs, power management, and aircraft response

6. Teaching airspeed and attitude management during transition to climb, emphasizing the relationship between attitude, airspeed, and performance

7. Identifying and correcting common errors in real-time, providing specific feedback and demonstrating proper technique

8. Modeling proper radio communications and explaining when and why specific calls are made

9. Demonstrating situational awareness techniques including scanning for traffic, monitoring engine parameters, and maintaining ground track

10. Teaching noise abatement procedures where applicable and explaining their importance to community relations

Student Actions

During this lesson, the evaluator observes the CFI candidate’s student responding appropriately by:

1. Asking relevant questions about atmospheric effects on performance and H/V diagram implications

2. Participating actively in pre-takeoff planning including wind assessment and performance calculations

3. Following along with checklist procedures and understanding the reasoning behind each item

4. Demonstrating understanding of proper hover criteria before attempting takeoff

5. Attempting to replicate demonstrated control inputs and techniques during guided practice

6. Recognizing and verbalizing common errors when they occur during practice

7. Showing awareness of wind effects and making appropriate corrections

8. Maintaining communication with instructor throughout the maneuver

9. Demonstrating learning through improved performance on subsequent attempts

Completion Standards

The CFI candidate successfully completes ACS task HI.IX.A when they demonstrate the ability to teach normal takeoff and climb by meeting these measurable standards:

Knowledge Demonstration:

• Accurately explains how atmospheric conditions affect takeoff performance with specific examples
• Correctly identifies and discusses at least three factors that affect H/V diagram profile
• Identifies and explains correction techniques for common takeoff and climb errors

Risk Management Teaching:

• Demonstrates systematic approach to takeoff path selection considering all relevant factors
• Explains specific effects and management techniques for crosswind, windshear, tailwind, and turbulence conditions
• Outlines clear procedures for rejected takeoff and engine failure scenarios

Instructional Skill Standards:

• Completes appropriate checklists while explaining their importance (HI.IX.A.S1)
• Demonstrates proper radio communication techniques and explains their timing (HI.IX.A.S2)
• Shows runway/takeoff area verification procedures (HI.IX.A.S3)
• Teaches wind direction determination with multiple methods (HI.IX.A.S4)
• Demonstrates proper area clearing and positioning techniques (HI.IX.A.S5)
• Establishes stable hover while explaining performance and control criteria (HI.IX.A.S6)
• Verifies takeoff power and explains instrument interpretation (HI.IX.A.S7)
• Executes smooth transition to climb attitude maintaining airspeed ±5 knots (HI.IX.A.S8)
• Maintains engine and rotor RPM within normal operating limits throughout maneuver (HI.IX.A.S9)
• Demonstrates proper ground track maintenance with crosswind correction (HI.IX.A.S10)
• Explains and follows applicable noise abatement procedures (HI.IX.A.S11)
• Models proper runway incursion avoidance techniques (HI.IX.A.S12)
• Provides effective real-time analysis and correction of common errors (HI.IX.A.S13)

The candidate must demonstrate teaching effectiveness through clear explanations, proper sequencing of instruction, and the ability to identify and correct student errors while maintaining safe flight operations throughout the maneuver.