Hover Taxi

Objective

Upon completion of this lesson, the student will be able to safely conduct hover taxi operations in accordance with FAA-S-ACS-15 Area of Operation IV, Task B. The student will demonstrate the ability to:

1. Explain hover taxi procedures, limitations, and risk management considerations per 14 CFR Part 91 operating rules
2. Interpret airport/heliport signs, markings, lighting, and visual wind indicators
3. Execute hover taxi maneuvers maintaining ground track within ±4 feet and hovering altitude within prescribed ACS tolerances
4. Perform 360° pivoting turns stopping within 10° of specified headings
5. Apply proper radio procedures and clearance compliance at towered and non-towered facilities

Content

Regulatory Foundation

Hover taxi operations are governed by 14 CFR 91.129 (operations in Class D airspace), 91.126 (operations at non-towered airports), and 91.113 (right-of-way rules). Per 14 CFR 91.3, the pilot-in-command remains responsible for the safe operation of the aircraft during all phases of flight, including hover taxi.

Airport/Heliport Information Resources

Current aeronautical information is critical for safe hover taxi operations. The Chart Supplement provides essential heliport data including surface composition, lighting, fuel availability, and operating procedures. Airport diagrams show taxiway layouts, hot spots, and construction areas. NOTAMs contain temporary changes to published information such as closed taxiways, construction, or lighting outages. Always review these resources during preflight planning.

Hover Taxi Instructions and Clearances

At towered airports, hover taxi clearances are specific and must be read back verbatim. Common clearances include “hover taxi to” followed by a specific location, taxiway, or runway. Limitations may include altitude restrictions, route specifications, or hold short instructions. At non-towered airports, announce intentions on the Common Traffic Advisory Frequency (CTAF) using standard phraseology: “Anytown Traffic, Helicopter 123AB, hover taxi from the ramp to runway 09, Anytown.”

Signs, Markings, and Lighting Systems

Airport signs follow standardized color coding: red backgrounds indicate mandatory instruction signs (runway holding positions), yellow backgrounds show location signs (taxiway identifiers), and black letters on yellow backgrounds indicate direction signs. Taxiway markings include centerlines (yellow), holding position markings (solid and dashed yellow lines), and runway/taxiway intersections. Airport lighting systems include taxiway edge lights (blue), centerline lights (green), and runway approach lighting systems.

Wind Indicators

Visual wind indicators include windsocks, tetrahedrons, and segmented circles. Windsocks provide both wind direction and approximate velocity - a fully extended sock indicates winds of approximately 15 knots or greater. The large end points into the wind. Tetrahedrons and segmented circles indicate the preferred traffic pattern direction but may not represent current wind conditions.

Aircraft Lighting Requirements

Per 14 CFR 91.209, aircraft must display appropriate lighting during hover taxi operations. Anti-collision lights (rotating beacon or strobe) must be operating from engine start to shutdown. Position lights (navigation lights) are required during night operations. Landing lights should be used as necessary for safety but consider their effect on other pilots’ night vision.

Pilot Activities During Hover Taxi

Maintain constant vigilance through continuous visual scanning for other aircraft, vehicles, and obstacles. Keep one hand on the collective and one on the cyclic at all times - never use both hands for other tasks simultaneously. Monitor engine parameters and rotor RPM continuously. Use smooth, deliberate control inputs to maintain precise aircraft positioning. Communicate intentions clearly and acknowledge all clearances.

Towered vs Non-Towered Procedures

At towered airports, obtain clearance before beginning hover taxi operations and comply with all ATC instructions. Maintain radio contact and request progressive taxi instructions if unfamiliar with the airport layout. At non-towered airports, announce your position and intentions on CTAF, listen for other traffic, and follow established traffic patterns. The concept is like the difference between a formal dance with a choreographer (towered) versus a freestyle dance where everyone coordinates themselves (non-towered).

Runway Entry and Crossing Procedures

Never enter or cross a runway without specific clearance at towered airports or after ensuring the runway is clear at non-towered airports. At towered facilities, hold short of runway holding position markings until receiving clearance. The phraseology “cleared to cross” or “cleared to taxi to” must specifically mention the runway. At non-towered airports, broadcast intentions and visually verify the runway is clear before crossing.

Height/Velocity Considerations

The Height/Velocity diagram in the Rotorcraft Flight Manual defines combinations of height and forward speed to avoid during normal operations. During hover taxi, maintain awareness of your position relative to the avoid area. Generally, hover taxi operations occur in the “caution area” where autorotative landing capability is reduced. Minimize time spent in this region and be prepared for immediate touchdown if power failure occurs.

Aircraft Operating Limitations

Consult the Rotorcraft Flight Manual for specific hover taxi limitations including maximum gross weight for hovering, density altitude limitations, and wind limitations. Power required increases significantly with gross weight, density altitude, and wind conditions. Never exceed demonstrated crosswind limits or attempt hover operations beyond the aircraft’s performance capability.

Risk Management Elements

Distractions and Situational Awareness: Task prioritization is crucial during hover taxi. Primary tasks include aircraft control and obstacle avoidance. Secondary tasks include radio communications and checklist completion. Never allow secondary tasks to compromise primary flight safety. If overwhelmed, stop the aircraft and reassess.

Reduced Visibility Operations: Night or low visibility hover taxi requires increased caution. Use landing lights judiciously to avoid glare reflection off surfaces. Reduce taxi speed and increase following distance. Consider requesting progressive taxi instructions even if familiar with the airport layout.

Runway Incursion Prevention: Always verify runway crossing clearances and maintain awareness of runway holding position markings. When in doubt, ask ATC for clarification. Visual verification of clear runways is required even with clearances received.

Aircraft, Vehicles, and Personnel Hazards: Helicopters create unique hazards due to main rotor disc diameter and tail rotor location. Maintain adequate clearance from all obstacles - the main rotor disc extends well beyond the fuselage. Be especially cautious around linemen, fuel trucks, and other aircraft.

Downwash Effects: Rotor downwash can exceed 100 mph directly below the aircraft, decreasing with distance from the rotor disc. This creates hazards for personnel, loose objects, and light aircraft. Consider downwash effects when hover taxiing near hangars, parked aircraft, or personnel areas.

Rotor Strike Hazards: Main rotor clearance decreases with cyclic displacement and aircraft attitude changes. Tail rotor position varies significantly during pedal inputs. Maintain constant awareness of rotor clearance, especially in confined areas or near obstacles.

Confirmation Bias: Don’t assume taxi instructions match your expectations. Read back all clearances and verify their accuracy. If a clearance seems unusual or unclear, ask for clarification rather than proceeding based on assumptions.

Schedule

Equipment

Required References

• FAA-H-8083-21B Helicopter Flying Handbook, Chapter 7
• FAA-S-ACS-15 Private Pilot Helicopter Airman Certification Standards
• 14 CFR Parts 61, 91
• Current Chart Supplement for local airport/heliport
• Airport diagram (if published)
• Aeronautical Chart User’s Guide

Training Materials

• Helicopter with dual flight controls
• Traffic cones or markers for ground reference course
• Sectional chart for local area
• Airport/facility directory
• Kneeboard and writing materials
• Handheld radio (backup)

Visual Aids

• Height/Velocity diagram from aircraft flight manual
• Airport signs and markings reference card
• Wind indicator interpretation guide
• Light gun signals reference (if applicable)

Instructor Actions

1. Brief regulatory requirements for hover taxi operations under 14 CFR Parts 91.113, 91.126, and 91.129, emphasizing pilot-in-command responsibilities and clearance compliance requirements.

2. Review current airport information from Chart Supplement and NOTAMs, pointing out relevant details such as surface composition, lighting systems, and any operational restrictions affecting today’s lesson.

3. Demonstrate proper radio procedures for hover taxi operations, showing the difference between towered and non-towered communications, including standard phraseology and read-back requirements.

4. Explain Height/Velocity considerations using the aircraft’s H/V diagram, identifying the avoid area and discussing why hover taxi operations typically occur in the caution region.

5. Identify airport signs, markings, and lighting during taxi to the practice area, explaining the color coding system and mandatory vs. informational signs.

6. Set up ground reference course using traffic cones or natural markers to create a pattern suitable for demonstrating straight-line hover taxi and pivot point exercises.

7. Demonstrate basic hover taxi technique showing proper control inputs for forward, sideward, and rearward movement while maintaining constant altitude and heading.

8. Show precision ground track following by hover taxiing along a designated path, maintaining centerline position within ±4 feet while providing verbal commentary on control inputs.

9. Demonstrate pivoting turns by performing 360° turns left and right around designated pivot points, explaining the technique for maintaining position and achieving precise heading control.

10. Practice radio communications during hover taxi exercises, having student make position reports and taxi requests using proper phraseology.

11. Point out risk management considerations throughout the lesson, specifically identifying potential hazards such as obstacles, downwash effects, and rotor clearance limitations.

12. Monitor student progress continuously, providing immediate feedback on altitude control, ground track maintenance, and smooth control application.

13. Simulate various scenarios including hold-short instructions, progressive taxi requests, and runway crossing procedures to build practical experience.

14. Conduct performance evaluation against ACS standards, noting areas meeting requirements and identifying items needing additional practice.

15. Provide comprehensive debrief covering regulatory compliance, risk management application, and technical performance against measurable standards.

Student Actions

The student will actively participate in all aspects of hover taxi operations by:

1. Reviewing airport information from provided references and identifying relevant details for today’s operations including surface conditions, traffic pattern information, and any NOTAMs affecting the lesson.

2. Completing appropriate checklists for engine start, before hover taxi, and after taxi operations in accordance with the aircraft flight manual procedures.

3. Making proper radio calls using standard phraseology for non-towered operations, including position reports and intention announcements on the appropriate CTAF frequency.

4. Reading back clearances verbatim when practicing towered airport procedures, demonstrating understanding of clearance requirements and limitations.

5. Maintaining visual scanning continuously during all hover taxi operations, identifying other aircraft, vehicles, obstacles, and personnel in the operating area.

6. Controlling the aircraft smoothly through all hover taxi maneuvers including forward, sideward, rearward, and pivoting movements while maintaining prescribed altitude and position tolerances.

7. Following designated ground tracks within ±4 feet of centerline while maintaining proper altitude control and smooth control application throughout the exercise.

8. Performing precision pivoting turns through 360° left and right rotations, maintaining position within 4 feet of pivot points and stopping within 10° of specified headings.

9. Monitoring engine parameters and rotor RPM throughout all operations, announcing any readings outside normal operating ranges.

10. Identifying potential hazards and verbalizing risk management considerations including rotor clearance, downwash effects, and obstacle avoidance strategies.

11. Demonstrating situational awareness by correctly identifying airport signs and markings encountered during hover taxi operations and explaining their significance.

12. Applying proper procedures for simulated runway approaches, hold-short situations, and crossing clearances while maintaining aircraft control and position awareness.

Completion Standards

The student demonstrates satisfactory performance when able to meet the following measurable criteria from FAA-S-ACS-15 Area of Operation IV, Task B:

Knowledge Standards:

• Explains hover taxi procedures, clearances, and limitations per current regulations and airport requirements
• Identifies airport signs, markings, lighting, and wind indicators correctly
• Describes Height/Velocity considerations and aircraft operating limitations applicable to hover taxi operations
• States proper procedures for towered and non-towered operations including runway entry and crossing requirements

Risk Management Standards:

• Identifies and mitigates risks associated with distractions, reduced visibility, runway incursions, and other aircraft/vehicles/personnel
• Demonstrates awareness of downwash effects and rotor strike hazards throughout all operations
• Shows understanding of Height/Velocity limitations and confirmation bias prevention techniques

Skill Standards:

• Completes appropriate checklists correctly and in proper sequence
• Receives and reads back clearances/instructions accurately using proper phraseology (when applicable)
• Uses airport diagram effectively and maintains situational awareness throughout taxi operations
• Complies with all airport/heliport taxiway markings, signals, and signs encountered
• Maintains powerplant and main rotor RPM within normal operating limits continuously
• Maintains straight ground track within ±4 feet of designated centerline during forward, sideward, and rearward hover taxi
• Maintains recommended hovering altitude within ±1/2 of prescribed altitude when within 10 feet of surface, or ±5 feet when above 10 feet
• Demonstrates smooth hover taxi over specified ground references in all directions with proper control coordination
• Maintains constant rate of turn during pivoting maneuvers at designated pivot points
• Maintains aircraft position within 4 feet of each pivot point during all turning maneuvers
• Completes 360° pivoting turns left and right, stopping within 10° of specified headings
• Makes smooth, timely, and correct control applications throughout all phases of the maneuver sequence

Performance meeting these standards indicates readiness for FAA-S-ACS-15 PH.IV.B practical test evaluation and safe hover taxi operations in the National Airspace System.