Steep Approach

Objective

The CFI candidate will demonstrate the ability to teach steep approach operations to commercial proficiency standards. Upon completion, the CFI candidate will explain the theory, risk management, and practical execution of steep approaches while simultaneously demonstrating the maneuver. The candidate will identify common student errors and provide effective corrective strategies that comply with ACS task HI.IX.D.

Content

Definition and Purpose of Steep Approaches

A steep approach is defined as an approach with an angle greater than normal (typically 15° maximum) used to clear obstacles or operate into confined areas. Unlike a normal 3-degree approach, steep approaches require precise power management and increased descent rates while maintaining controlled closure to the landing point.

Key Teaching Point: Think of a steep approach like descending a steep mountain trail - you need more control and awareness of your footing (power setting) because the consequences of a mistake are amplified by the steeper angle.

Stabilized Steep Approach Criteria (HI.IX.D.K1)

A stabilized steep approach requires:

• Constant approach angle (up to 15° maximum)
• Consistent airspeed appropriate for conditions
• Stable rate of closure to termination point
• Power setting that maintains desired profile
• Proper rotor RPM throughout approach

Students often struggle with the concept that “stabilized” doesn’t mean “static” - explain that like a well-balanced bicycle going downhill, all parameters are controlled but actively managed.

Approach Techniques and Applicability (HI.IX.D.K2)

Normal vs. Steep Approach Applications:

• Normal approaches: Standard airports, unobstructed approach paths
• Steep approaches: Confined areas, obstacle clearance, emergency landing sites

Technique Variations:

• Power-on steep approach: Maintains energy, allows for quick go-around
• Power-off steep approach: Simulates engine failure scenarios
• Running landing: For heavier aircraft or performance limitations

Performance Data and H/V Diagram Considerations (HI.IX.D.K3)

The Height-Velocity diagram becomes critical during steep approaches because:

• Lower airspeeds increase vulnerability in the avoid area
• Steeper angles may require operation at lower altitudes
• Power requirements increase, affecting autorotation capabilities

Teaching Emphasis: The H/V diagram isn’t just a chart - it’s your safety envelope. In steep approaches, you’re often operating closer to the edges of this envelope, making precise technique essential.

Atmospheric Effects on Performance (HI.IX.D.K4)

Density Altitude Impact:

• Higher density altitude reduces available power
• Affects autorotation performance during steep approaches
• Changes optimal approach speeds and angles

Temperature and Humidity:

• Hot, humid conditions reduce performance margins
• May require shallower approach angles or lighter weights
• Affects go-around performance capability

Wind Correction Techniques (HI.IX.D.K5)

Crosswind Considerations:

• Maintain ground track alignment with landing area
• Account for wind drift during descent
• Adjust approach angle to compensate for wind effects

Headwind/Tailwind Effects:

• Headwinds steepen effective approach angle
• Tailwinds require power adjustments to maintain profile
• Gusty conditions demand increased power margins

Aircraft Performance and Limitations (HI.IX.D.K6)

Weight and Balance:

• Heavier aircraft require modified approach techniques
• Center of gravity affects control authority
• Performance charts provide approach speed guidance

Power Limitations:

• Available power determines maximum approach angle
• Reserve power needed for go-around capability
• Environmental conditions affect power margins

Common Errors (HI.IX.D.K7)

1. Excessive approach angle - Beyond aircraft capabilities
2. Unstable approach - Constantly changing parameters
3. Inadequate power management - Poor energy management
4. Fixation on landing point - Losing situational awareness
5. Improper wind correction - Drifting off desired track

Risk Management Elements

Approach Path Selection (HI.IX.D.R1):

• Evaluate obstacles and terrain
• Consider aircraft performance limitations
• Account for wind conditions and intensity

Wind Effects Management (HI.IX.D.R2-R4):

• Wind Direction: Plan for crosswind corrections and ground track maintenance
• Windshear: Recognize signs and have escape plan ready
• Turbulence: Maintain control margins and consider go-around triggers

Contingency Planning (HI.IX.D.R5-R6):

• Go-around Planning: Brief power requirements and escape route
• Engine Failure: Know autorotation options from approach profile

Hazard Awareness (HI.IX.D.R7-R13):

• Collision Hazards: Scan for other aircraft and obstacles
• Vortex Ring State: Recognize high descent rate with low airspeed combination
• Landing Surface: Evaluate suitability and prepare for surface conditions
• LTE Conditions: Brief critical azimuth awareness during approach
• DVE/Flat Light: Have references and go-around criteria established

Schedule

Equipment

Required References:

• FAA-H-8083-21A Helicopter Flying Handbook
• FAA-H-8083-4 Helicopter Instructor’s Handbook
• Aircraft Flight Manual/POH
• FAA-S-ACS-29 CFI Helicopter ACS

Visual Aids:

• Height-Velocity diagram for aircraft type
• Approach profile diagrams
• Performance charts and tables
• Landing area survey checklist

Materials:

• Whiteboard/markers for angle illustrations
• Calculator for performance computations
• Sectional chart for terrain evaluation
• Approach checklist reference

Instructor Actions

The CFI candidate will:

1. Explain approach planning while demonstrating pre-approach checklist completion and radio procedures (HI.IX.D.S1, S2)

2. Analyze landing area while pointing out wind indicators, surface conditions, and obstacle considerations (HI.IX.D.S3)

3. Select termination point while explaining decision factors including performance limitations and escape options (HI.IX.D.S4)

4. Demonstrate approach establishment while narrating power reduction techniques and angle management to achieve 15° maximum approach angle (HI.IX.D.S5)

5. Maintain ground track while explaining crosswind correction inputs and visual reference techniques (HI.IX.D.S6)

6. Monitor engine parameters while teaching power management techniques to maintain Nr within normal limits (HI.IX.D.S7)

7. Execute approach termination while explaining the transition to hover or landing within ±2 feet of intended point (HI.IX.D.S8)

8. Brief runway incursion avoidance procedures when applicable to airport operations (HI.IX.D.S9)

9. Identify and correct common student errors while explaining recognition techniques and corrective strategies (HI.IX.D.S10)

Student Actions

The evaluating DPE will:

1. Observe teaching effectiveness during ground instruction and flight demonstration phases

2. Ask knowledge questions covering stabilized approach criteria, H/V diagram applications, and performance considerations

3. Present scenario variations such as changing wind conditions, obstacle clearance requirements, or emergency situations

4. Evaluate risk management discussion including hazard identification and mitigation strategies

5. Request error analysis for common steep approach mistakes and appropriate instructional responses

6. Assess communication skills during radio procedures and instructional explanations

Completion Standards

The CFI candidate demonstrates instructional competency in steep approaches per ACS HI.IX.D when they can:

Knowledge Standards:

• Explain stabilized steep approach criteria with specific angle and speed parameters
• Describe approach technique selection based on aircraft and environmental factors
• Interpret H/V diagram implications for steep approach operations
• Identify atmospheric effects on approach performance and required corrections

Risk Management Standards:

• Analyze approach path selection considering all relevant hazard factors
• Explain wind effect management including windshear and turbulence recognition
• Brief comprehensive contingency planning for go-around and engine failure scenarios
• Identify and mitigate collision hazards, VRS potential, and LTE conditions

Skill Standards:

• Complete appropriate checklists and make proper radio calls
• Demonstrate proper landing area analysis and termination point selection
• Establish and maintain approach angle not exceeding 15° with appropriate closure rate
• Maintain ground track within ±10° of desired course with proper crosswind correction
• Keep powerplant and Nr within normal operating limits throughout approach
• Terminate approach within ±2 feet of selected point at surface or stabilized hover
• Apply runway incursion avoidance procedures when applicable
• Recognize and demonstrate correction techniques for common steep approach errors

The candidate must simultaneously demonstrate the maneuver while providing clear, accurate instruction that addresses all ACS knowledge, risk management, and skill elements for task HI.IX.D.