Autorotations in a Single-Engine Helicopter

Objective

Upon completion of this lesson, the CFI candidate will demonstrate the ability to teach autorotation safety decision-making in single-engine helicopters according to ACS task HI.17.G. The candidate will explain the critical judgment factors that determine when to continue or discontinue an autorotation, demonstrate proper power recovery techniques, and effectively communicate risk management strategies that prioritize safety of flight over task completion.

Content

Autorotation Safety Decision-Making

The instructor must understand that autorotation safety is fundamentally about continuous risk assessment and the courage to execute a go-around when conditions deteriorate. Unlike fixed-wing aircraft where engine failure often requires landing, helicopters provide the unique option to recover power during autorotation—an option that must be used decisively when safety is compromised.

Critical Decision Points in Autorotation

The Two-Part Safety Assessment:

1. Can we safely continue? - Evaluate energy state, landing area, and pilot performance
2. Should we continue? - Consider risk versus training value

Think of autorotation like driving down a mountain road with failed brakes—you’re committed to descending, but you can still choose your exit ramp if conditions ahead look dangerous.

Continuous Assessment Factors:

• Rotor RPM trends and energy management
• Glide path alignment with suitable landing area
• Student pilot performance and decision-making
• External factors (traffic, obstacles, surface conditions)
• Weather deterioration during the maneuver

Power Recovery Decision Matrix

Mandatory Go-Around Situations:

• Rotor RPM approaching minimum limits despite corrective inputs
• Glide path leading to unsuitable terrain or obstacles
• Student demonstrating poor judgment or inadequate skill
• Traffic conflicts or other aircraft in landing area
• Sudden weather deterioration (visibility, wind shear)

The “Safety First” Principle: Never sacrifice safety to complete a training task. The ACS explicitly states that landing area safety concerns beyond control do not constitute unsatisfactory performance. This removes pressure to force unsafe landings.

Effective Communication During Autorotation

Progressive Alerting System:

1. Advisory: “Monitor your rotor RPM”
2. Caution: “Rotor RPM is getting low, make your correction”
3. Warning: “Power recovery, now!”

Teaching Power Recovery Technique

The Three-Step Recovery:

1. Announce: “Power recovery” (clear communication)
2. Power: Smoothly add collective while rolling on throttle
3. Assess: Verify rotor RPM recovery and aircraft control

Common Instructional Errors

Hesitation to Call Go-Around:

• New instructors often hesitate to interrupt training progression
• Emphasis: One successful, safe autorotation is worth more than ten dangerous attempts
• Better to execute five power recoveries than one unsafe landing

Inadequate Briefing:

• Students must understand that power recovery is a normal, expected part of training
• Brief specific go-around criteria before beginning maneuvers

Risk Management Integration

Effective autorotation instruction requires continuous risk assessment throughout the maneuver. The instructor must model proper decision-making while maintaining aircraft control and teaching effectiveness. This demonstrates the multi-tasking reality of professional helicopter operations.

The “Outs” Concept: Always maintain multiple escape options—altitude for energy, suitable landing areas, and the ultimate out of power recovery. Like a chess player thinking three moves ahead, the helicopter instructor must constantly evaluate developing situations.

Schedule

Equipment

• FAA-S-ACS-29 Helicopter Flight Instructor ACS
• FAA-H-8083-4 Helicopter Instructor’s Handbook
• Current helicopter flight manual/POH
• Sectional chart of local training area
• Whiteboard or teaching aid for decision matrix
• Scenario-based training cards or examples

Instructor Actions

The CFI candidate will:

1. Present the safety-first philosophy by explaining why autorotation go-around decisions demonstrate superior judgment, not failure
2. Demonstrate decision-making verbalization by talking through the continuous risk assessment process during autorotation scenarios
3. Teach power recovery technique using the three-step method with emphasis on smooth, positive control inputs
4. Model risk management by presenting realistic scenarios and walking through the decision process for each situation
5. Address common hesitation factors that prevent timely go-around decisions, including performance pressure and completion bias
6. Demonstrate teaching techniques for building student confidence in making safety-based decisions during emergency procedures

Student Actions

The student (representing the evaluator observing the CFI candidate) will:

1. Engage in scenario discussions by asking clarifying questions about specific decision points during autorotation
2. Practice verbalization of risk assessment factors during simulated autorotation sequences
3. Demonstrate understanding of go-around criteria through examples and case studies
4. Ask questions about balancing training objectives with safety requirements
5. Participate in decision-making exercises using realistic autorotation scenarios
6. Provide feedback on the clarity of safety communication techniques presented

Completion Standards

The CFI candidate successfully demonstrates competency when they:

1. Explain all knowledge elements per HI.17.G.K1-K4 including mandatory go-around criteria, unsatisfactory performance factors, acceptable safety concerns, and the overriding principle that safety of flight takes precedence over task completion
2. Present comprehensive risk management strategies per HI.17.G.R1-R3 covering continuous assessment techniques, go-around decision criteria, and safety prioritization over task completion
3. Demonstrate teaching ability for sound judgment per HI.17.G.S2 by presenting clear decision-making frameworks that students can apply during autorotation training
4. Show instructional competency for power recovery per HI.17.G.S1 through effective demonstration of techniques and timing for safe autorotation discontinuation
5. Communicate safety priorities effectively using teaching methods that build student confidence in making appropriate go-around decisions without fear of evaluation failure
6. Present lesson content in a logical sequence that builds understanding from basic safety principles through complex decision-making scenarios, maintaining focus on ACS task HI.17.G requirements throughout