Air Exercise 15A — Slipping (Forward Slips & Slipping Turns)
Lesson ID: LS-PT-AE-015A-001
Stage: Incubation
Training Level: Early PTR
Next Lesson Air Exercise 15B — Side Slips & Crosswind Landings
Estimated Study Time
40–60 minutes
Estimated Flight Time
0.7–1.0 hour
Transport Canada References
● Flight Training Manual — Exercise 15 Slipping
● Flight Instructor Guide
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Learning Objective
After completing this lesson the student will be able to safely perform a forward slip and a slipping turn to lose altitude rapidly without significantly increasing airspeed while maintaining full control of the aircraft.
The student will understand:
● What a forward slip is.
● Why slips work.
● The difference between coordinated flight and slipping flight.
● When a forward slip should be used.
● When a slipping turn is appropriate.
Skill Objectives
● Enter a forward slip.
● Maintain the desired airspeed.
● Adjust the amount of slip.
● Recover smoothly.
● Perform a slipping turn while maintaining control.
Safety Objectives
● Recognize excessive slips.
● Understand aircraft limitations.
● Recognize airspeed indication errors.
● Understand why a slip is not a skid.
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Core Lesson
A forward slip increases drag—not airspeed—allowing the aircraft to descend steeply while remaining fully controllable.
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Introduction
Pilots are not always able to plan the perfect approach. Unexpected tailwinds, high circuit patterns, flap malfunctions, or obstacle clearance may leave the aircraft higher than desired during the approach.
A forward slip provides a safe method of increasing the rate of descent without significantly increasing airspeed.
Unlike simply lowering the nose, which converts altitude into speed, a forward slip converts altitude into drag.
This makes the manoeuvre an important energy management tool.
Throughout this lesson, we will focus on:
● General slipping
● Forward slips
● Slipping turns
Side slips for crosswind landings are covered separately in Air Exercise 15B.
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What Is a Slip?
A slip is a manoeuvre in which the aircraft is flown with crossed controls.
The aircraft may be banked in one direction while opposite rudder prevents the aircraft from turning normally.
The aircraft therefore moves partly sideways through the air.
Although the aircraft’s longitudinal axis is no longer aligned with the relative airflow, the aircraft remains fully controllable.
The increased side area exposed to the airflow creates substantially more drag.
The result is:
● increased rate of descent
● little increase in airspeed
● good directional control
● improved energy management
A properly performed slip is a normal manoeuvre and should not be confused with a skid.
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Why It Matters
Forward slips are commonly used when:
● arriving high on final
● conducting forced approaches
● approaching very short fields
● flying aircraft with limited flap effectiveness
● flap malfunction (where approved by the manufacturer) or no flaps available
● obstacle clearance after crossing the threshold
● slipping turns from base to final when excess altitude exists
Rather than building excessive airspeed, the pilot safely increases drag.
This preserves approach speed while reducing altitude.
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Aerodynamics / Theory
A forward slip works because crossed controls place the aircraft at an angle to the relative airflow.
Instead of presenting only the frontal area of the aircraft to the wind, the fuselage, landing gear and side surfaces create much greater parasite drag.
-Lift continues to support the aircraft.
-The wing is not stalled.
-Angle of attack remains below the critical angle.
-The elevator continues controlling pitch.
-The ailerons maintain bank.
-The rudder prevents the aircraft from turning.
Because drag increases dramatically, the aircraft descends more steeply while airspeed changes very little.
Energy Management
Without a slip:
Altitude → Airspeed
-With a slip:
Altitude → Drag
That is the entire purpose of the manoeuvre.
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Recognition
A correctly established forward slip has several characteristics.
Outside Picture
● Aircraft noticeably banked.
● Nose pointing opposite the bank.
● Steeper approach path.
● Runway appears offset from the nose.
Aircraft Feel
● Crossed control pressures.
● Firm rudder pressure.
● Steady aileron input.
Instruments
● Stable approach speed.
● Increased rate of descent.
● Ball displaced from the centre (expected during a slip).
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How It Develops The manoeuvre develops in a logical sequence.
1. Reduce power as required.
2. Lower one wing using aileron.
3. Apply opposite rudder.
Hold the desired airspeed using elevator.
Adjust the amount of bank and rudder to control the descent.
Recover by simultaneously relaxing rudder pressure while levelling the wings.
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Hazards
Although a slip is a normal manoeuvre, improper technique can create problems.
Hazards include:
● Airspeed indication errors due to pitot-static position.
● Excessive sink rate close to the ground.
● Over-controlling.
● Abrupt recovery.
● Entering below a safe recovery altitude.
● Aircraft-specific flap or slip limitations.
● Student confusion between slips and skids.
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Instructor Demonstration
The instructor should demonstrate:
● Normal approach.
● Entering the slip smoothly.
● Increasing drag without increasing speed.
● Small slips.
● Large slips.
● Recovery.
● Slipping turn from base to final.
● The visual picture outside.
Students should observe:
● Nose displaced from the flight path.
● Stable airspeed.
● Increased descent.
● Smooth control pressures.
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Procedure
-Entry
-Complete lookout.
-Confirm adequate altitude.
-Reduce power if required.
-Bank toward the desired wing.
-Apply opposite rudder until the aircraft no longer turns.
-Adjust elevator to maintain approach speed.
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Maintaining the Slip
Maintain:
● bank angle
● opposite rudder
● desired airspeed
Increase bank and opposite rudder together if greater descent is required.
Reduce both together if less descent is required.
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Slipping Turn
A slipping turn uses exactly the same aerodynamic principle.
Instead of flying straight ahead, the aircraft is already turning.
The pilot applies enough opposite rudder to slow the rate of turn while maintaining the desired bank and increased drag.
This is useful when turning onto final while slightly high on the approach.
The objective is the same:
Increase the rate of descent without allowing airspeed to build.
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Recovery
-Smoothly reduce opposite rudder.
-Level the wings.
-Re-establish coordinated flight.
-Adjust power as necessary.
-Continue the approach.
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Operational Applications
Forward slips are useful during:
● Forced approaches.
● Short-field approaches.
● Obstacle clearance.
● High approaches.
● Aircraft with limited flap capability.
● Slipping turns from base to final.
● Energy management during visual approaches.
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Brace Foot Rule
One of the hardest parts of learning a forward slip is that the control inputs feel unnatural.
In normal turning flight, the controls work together:
● Bank right → right rudder as needed to counteract the adverse yaw.
● Bank left → left rudder to as needed counteract the adverse yaw.
A forward slip is different.
The controls are intentionally crossed.
A useful way to picture this is to imagine sitting in the passenger seat of a car.
Suppose the driver suddenly turns sharply to the right.
Your body wants to continue straight ahead because of inertia, so you instinctively brace yourself with your left foot against the floorboard.
A forward slip has a similar feel.
If the aircraft is banked to the right, your rudder pressure is to the left.
If the aircraft is banked to the left, your rudder pressure is to the right.
The controls oppose each other on purpose.
This is why a forward slip initially feels unusual to new pilots.
Slipping Memory Aid
Turn Right → Left Foot
Turn Left → Right Foot
Think of the rudder foot as the foot you would naturally brace with if someone suddenly steered a car in that direction.
Caution
This memory aid is intended only for slipping.
It does not apply to coordinated turns.
In a normal coordinated right turn, you still apply right rudder.
The “brace with the opposite foot” analogy is simply a way to remember the crossed-control relationship used during a slip.
*Brace Foot Rule: The rudder foot in a slip is the same foot you’d instinctively brace with if someone suddenly turned the car.
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Aircraft Limitations
Always consult the POH.
-Some aircraft prohibit prolonged slips with flaps extended.
-Some aircraft may display inaccurate airspeed indications during slips.
-Aircraft limitations always take precedence over general technique.
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Instructor Notes
Emphasize:
“Bank controls where the lift goes.”
“Rudder controls where the nose points.”
Students often incorrectly believe rudder creates the descent.
It does not.
The increased drag created by the crossed-control attitude produces the steeper descent.
Demonstrate several slip angles so students can appreciate that the manoeuvre is adjustable rather than an on/off technique.
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Recognition & Decision Framework
High on approach?
↓
Can a normal approach still be flown safely?
↓
Yes → Continue normally.
↓
No
↓
Forward slip or slipping turn (if appropriate).
↓
Maintain approach speed.
↓
Recover before touchdown.
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Memory Aid
Bank — Opposite Rudder — Hold Speed
Remember:
The bank creates the slip. The rudder stops the turn. The elevator controls the speed.
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Common Student Errors
● Forgetting the lookout.
● Applying rudder before bank.
● Not enough opposite rudder.
● Too much rudder.
● Chasing the airspeed.
● Looking only inside.
● Recovering abruptly.
● Holding excessive bank.
● Allowing airspeed to decay.
● Confusing a slip with a skid. (skids are covered in Air eExercise 15C)
● Forgetting aircraft limitations.
● Continuing the slip below the intended recovery point.
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Common Misconceptions
Myth: A forward slip is an uncoordinated mistake.
Reality: It is an intentional, controlled manoeuvre.
Myth: Slipping will increase your speed.
Reality: Slips primarily increase drag.
Myth: The wing is stalled.
Reality: The wing safely remains below the critical angle of attack.
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Practical Decision Rule
High on approach with stable airspeed?
Use a forward slip or slipping turn to increase drag—not speed.
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Exercise Summary
A forward slip is one of the pilot’s most effective energy management tools. By combining bank and opposite rudder, the aircraft presents more surface area to the airflow, creating additional drag and allowing a steeper descent without a significant increase in airspeed. Properly performed, a forward slip is a safe, fully controlled manoeuvre that improves approach management and prepares the student for more advanced landing techniques.
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Related Lessons
● Air Exercise 15B — Side Slips & Crosswind Landings
● Air Exercise 15C — Accident Prevention: Skids & Skidding Turns
ALBATROSS KNOWLEDGE GRAPH METADATA
ALBATROSS KNOWLEDGE GRAPH METADATA
Version 4.1
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IDENTITY
Content ID:
LS-PT-AE-015A-001
Content Type Code:
LS
Domain Code:
PT
Topic Code:
AE15A
Sequence Number:
001
Knowledge Node ID:
KG-PT-AE15A-FORWARD-SLIPS-SLIPPING-TURNS
Knowledge Family:
Slipping Flight and Cross-Controlled Energy Management
Entity Type:
Flight Training Lesson / Knowledge Graph Node
Lesson Title / Content Title:
Air Exercise 15A — Slipping: Forward Slips & Slipping Turns
Short Title:
Forward Slips & Slipping Turns
Canonical Topic:
Forward slips and slipping turns
Alternative Topic Names:
Forward slip, forward slipping, slipping descent, slipping approach, slipping turn, intentional slip, cross-controlled descent, altitude-losing slip, drag-increasing slip
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CLASSIFICATION
Domain:
Pilot Training
Subdomain:
Basic Aircraft Handling / Approach and Landing
Category:
Air Exercises
Audience:
Student Pilot, Private Pilot Licence Candidate, Commercial Pilot Licence Candidate, Flight Instructor
Jurisdiction:
Canada / Transport Canada
Training System:
Transport Canada Aeroplane Flight Training
Certification Context:
Private Pilot Licence — Aeroplane, with later application to Commercial Pilot Licence training and operational flying
Stage:
Incubation
Phase:
Early PTR
Training Level:
Recognition and Early Execution
Estimated Study Time:
40–60 minutes
Estimated Flight Time:
0.7–1.0 hour
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CORE KNOWLEDGE
Primary Concept:
Using a controlled combination of bank and opposing rudder to increase drag and rate of descent without allowing a significant increase in airspeed, while maintaining the intended flight path and full aircraft control.
Plain-Language Definition:
A slip is a controlled manoeuvre in which the aircraft is banked one way while rudder is applied in the opposite direction. This exposes more of the aircraft to the airflow, creates additional drag, and allows the aircraft to descend more steeply without simply accelerating.
Technical Definition:
A slip is an intentional uncoordinated flight condition in which the aircraft’s longitudinal axis is not aligned with the relative airflow. Bank and yaw are deliberately mismatched, producing lateral airflow across the fuselage and increasing parasite drag. In a forward slip, control inputs are balanced to maintain the intended ground track. In a slipping turn, the aircraft continues turning, but at a reduced rate relative to the bank angle.
Key Principles:
• Bank establishes the direction and amount of slip.
• Opposing rudder regulates yaw, nose position, and rate of turn.
• Elevator controls pitch attitude and airspeed.
• Power establishes the aircraft’s underlying energy condition.
• Increasing the crossed-control condition generally increases drag and rate of descent, within aircraft and control limitations.
• A forward slip is used primarily to lose altitude while maintaining an intended flight path.
• A slipping turn combines increased drag with a continuing, controlled change in heading.
• The pilot must maintain adequate airspeed and remain below the critical angle of attack.
• The airspeed indicator may be unreliable in a slip because airflow around pitot or static sources may be disturbed.
• A slip is intentional and controlled; a skid is a different and potentially dangerous condition.
• A slip is not a substitute for an overshoot when the approach has become unstable or unsafe.
Underlying Theory:
Crossed controls place the aircraft at an angle to the relative airflow. This exposes more fuselage, landing gear, and side surface area to the airflow, substantially increasing parasite drag. The increased drag steepens the descent path while the elevator is used to maintain the desired attitude and airspeed. The wing continues producing lift and remains below its critical angle of attack during a correctly performed slip.
Why It Matters:
Forward slips and slipping turns allow pilots to manage excess altitude without converting that altitude into excessive airspeed. They are especially useful during forced approaches, high visual approaches, approaches in aircraft with limited flap effectiveness, and other situations where a steeper descent is required while preserving control of speed and flight path.
Content Role:
Introduces, explains, demonstrates, and prepares the learner to practise forward slips and slipping turns safely.
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LEARNING FRAMEWORK
Learning Outcome:
By the end of this lesson, the learner should be able to recognize, enter, maintain, adjust, and recover from a forward slip and a slipping turn while maintaining an appropriate airspeed, intended flight path, safe control margin, and compliance with aircraft limitations.
Core Competencies:
• Aircraft attitude control
• Energy management
• Flight-path control
• Bank and yaw coordination
• Airspeed management
• Visual approach judgment
• Cross-control awareness
• Recognition of slips and skids
• Aircraft limitation awareness
• Smooth control application
• Overshoot decision-making
Performance Standard:
The learner should be able to:
• Complete the required lookout and safety precautions.
• Smoothly establish an effective slip.
• Select an amount of slip appropriate to the required flight profile.
• Maintain a safe and appropriate pitch attitude and airspeed.
• Maintain the intended flight path during a forward slip.
• Control the rate of turn during a slipping turn.
• Adjust the amount of slip without abrupt control movement.
• Recover smoothly to coordinated flight.
• Avoid any significant skidding condition.
• Remain within all POH/AFM limitations.
Transport Canada’s published Exercise 15 criteria are qualitative rather than based on a separate fixed heading, altitude, or airspeed tolerance. They require an effective slip appropriate to the flight profile, maintenance of the intended flight path during a forward slip, and smooth recovery to coordinated flight. Any significant skidding manoeuvre is unacceptable. (Transport Canada)
Prerequisites:
• Air Exercise 5 — Attitudes and Movements
• Air Exercise 6 — Straight-and-Level Flight
• Air Exercise 7 — Climbing
• Air Exercise 8 — Descending
• Air Exercise 9 — Turning
• Air Exercise 11 — Slow Flight
• Air Exercise 12 — Stalls
• Air Exercise 14 — Spiral Dives
Required Prior Knowledge:
• Primary and secondary effects of flight controls
• Relationship between attitude, power, airspeed, and flight path
• Coordinated flight
• Recognition of slip and skid indications
• Critical angle of attack
• Stall awareness
• Descent control
• Basic turning principles
• Runway alignment and visual approach geometry
• Aircraft-specific flap and slip limitations
Common Student Errors:
• Failing to complete an effective lookout.
• Applying rudder before establishing bank.
• Using excessive or abrupt control inputs.
• Applying too little opposing rudder to produce an effective slip.
• Applying excessive opposing rudder without understanding the resulting flight path.
• Allowing the nose to rise and airspeed to decay.
• Lowering the nose excessively and allowing airspeed to increase.
• Chasing an unreliable airspeed indication.
• Fixating on cockpit instruments instead of the outside attitude and flight path.
• Allowing the aircraft to turn away from the intended ground track during a forward slip.
• Using a slipping turn too aggressively near the ground.
• Confusing a slipping turn with a skidding base-to-final turn.
• Recovering abruptly.
• Failing to establish the correct descent attitude after recovery.
• Continuing the slip below the planned recovery point.
• Attempting to salvage an unstable approach rather than overshooting.
• Ignoring POH/AFM restrictions involving prolonged slips or flap use.
Common Misconceptions:
• A slip is always an accidental control-coordination error.
• Rudder alone creates the increased rate of descent.
• The wing is stalled during a slip.
• Every high approach should be corrected with a slip.
• A slipping turn and a skid are the same manoeuvre.
• The airspeed indicator is always accurate during a slip.
• Full control deflection is always required.
• A slip is an on-or-off manoeuvre rather than an adjustable control technique.
• Recovering from the slip automatically restores the correct landing attitude.
Frequently Asked Questions:
• What is the difference between a forward slip and a side slip?
A forward slip is primarily used to increase the rate of descent while maintaining the intended ground track. A side slip is primarily used to correct lateral drift, especially during a crosswind landing.
• Why does the aircraft descend faster?
The misalignment between the aircraft and relative airflow creates substantially more parasite drag.
• Does the rudder cause the descent?
Not by itself. The complete crossed-control attitude exposes more aircraft surface area to the airflow and creates the additional drag.
• Can the aircraft stall during a slip?
Yes. A slip does not prevent a stall. The pilot must continue maintaining a safe angle of attack and airspeed.
• Why might the airspeed indication be inaccurate?
The slip may disturb airflow around the aircraft’s pitot or static pressure sources.
• Which wing should be lowered?
The direction depends on the desired flight path, wind, aircraft characteristics, and instructor or POH guidance. For approach applications, the selected direction must support safe runway tracking and control.
• Can a forward slip be performed with flaps extended?
Only when permitted by the aircraft POH/AFM.
• When should the slip be discontinued?
At a safe height that permits smooth recovery, re-establishment of the proper landing attitude, and completion of a stable approach.
• Should a slip be used to save every high approach?
No. If the approach is unstable, control margins are inadequate, or insufficient height remains for a smooth recovery, the pilot should overshoot.
Instructor Emphasis:
• Teach the control relationship before teaching the landing application.
• Demonstrate and practise slips at altitude before using them near the ground.
• Emphasize outside attitude and flight-path references because indicated airspeed may be unreliable in some aircraft and slip directions.
• Teach the learner to regulate the amount of slip rather than immediately using maximum control displacement.
• Clearly separate slipping turns from skidding turns.
• Emphasize that elevator continues controlling attitude and speed.
• Teach recovery early enough to re-establish the correct descent attitude before landing.
• Make overshoot judgment part of the exercise rather than treating the slip as a guaranteed solution.
Transport Canada’s Flight Instructor Guide advises that “slips and slipping turns first be demonstrated and practised at altitude”, notes that “airspeed indications may be unreliable depending on pitot and static source location, and identifies speed loss during recovery as a common instructional problem”. (Transport Canada)
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OPERATIONAL CONTEXT
Operational Link:
Slipping is an energy-management technique used when the aircraft has excess altitude but the pilot does not want to gain excessive airspeed. It allows the pilot to modify the descent profile while preserving control of speed, direction, and landing geometry.
Real-World Applications:
• High visual approaches
• Forced approaches
• Precautionary approaches
• Power-off approaches
• Approaches in aircraft with limited flap effectiveness
• Approved operations following a flap malfunction
• Short-field approach planning
• Descent after clearing an obstacle
• Adjustment of base-to-final geometry
• Aircraft types in which slipping is a normal landing technique
• Glider and tailwheel operations, when applicable to the aircraft
Related Aircraft Systems:
• Aileron control system
• Rudder control system
• Elevator control system
• Flight-control interconnections, where installed
• Trim system
• Pitot-static system
• Airspeed indicator
• Flap system
• Powerplant and throttle controls
• Stall-warning system
Related Human Factors:
• Visual fixation
• Instrument fixation
• Task saturation
• Approach continuation bias
• Plan continuation error
• Excess confidence in salvaging a poor approach
• Delayed overshoot decisions
• Misinterpretation of airspeed indications
• Confusion between slip and skid
• Low-altitude workload management
• Instructor-student transfer of control
• Attention division between attitude, runway, airspeed, and descent path
Related Regulations:
• Canadian Aviation Regulation 602.07 — Aircraft Operating Limitations
• Applicable aircraft markings and placards
• Applicable flight training standards
• Aircraft POH/AFM limitations and procedures
• Flight training unit procedures and operational restrictions
CAR 602.07 requires the aircraft to be operated in accordance with limitations contained in the applicable aircraft flight manual, authorized operating documents, markings, placards, or limitations prescribed by the state of registry. (Laws and Regulations of Canada)
Related Flight Test Standards:
Transport Canada Private Pilot Licence — Aeroplane Flight Test Guide, Exercise 15 — Slipping:
• Smoothly establish an effective slip.
• Perform a slip appropriate to the flight profile or crosswind conditions.
• Maintain the intended flight path during a forward slip.
• Recover smoothly to coordinated flight.
• Avoid any significant skidding manoeuvre.
“Slipping may be assessed during normal, precautionary, or forced landing approaches.” (Transport Canada)
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KNOWLEDGE RELATIONSHIPS
Previous Lesson:
LS-PT-AE-014-001 — Air Exercise 14: Spiral Dives
Current Lesson:
LS-PT-AE-015A-001 — Air Exercise 15A: Slipping — Forward Slips & Slipping Turns
Next Lesson:
LS-PT-AE-015B-001 — Air Exercise 15B: Slipping- Side Slips & Crosswind Landings
Parent Concepts:
• Aircraft Control
• Basic Aircraft Handling
• Energy Management
• Uncoordinated Flight
• Visual Approach Control
• Primary Flight Training
• Approach and Landing
Child Concepts:
• Forward-slip entry
• Forward-slip maintenance
• Slip-angle adjustment
• Forward-slip flight-path control
• Slipping-turn entry
• Slipping-turn rate control
• Airspeed control in a slip
• Slip recovery
• Pitot-static indication errors
• Slip-versus-skid recognition
• High-approach decision-making
• Aircraft-specific slip limitations
Sibling Concepts:
• Side slips
• Crosswind landing control
• Coordinated turns
• Descending turns
• Gliding descents
• Flap-assisted descents
• Spiral dives
• Skids and skidding turns
• Overshoots
• Approach stabilization
Supports:
• Air Exercise 15B — Side Slips & Crosswind Landings
• Air Exercise 15C — Accident Prevention: Skids & Skidding Turns
• Circuit training
• Approach and landing
• Forced landing procedures
• Precautionary landing procedures
• Short-field landings
• Crosswind operations
• Energy-management judgment
• Commercial pilot accuracy training
• Advanced aircraft handling
Supported By:
• Attitudes and Movements
• Straight-and-Level Flight
• Descending
• Turning
• Slow Flight
• Stalls
• Spiral Dives
• Primary and secondary effects of controls
• Coordinated-flight principles
• Angle-of-attack awareness
Related Lessons:
• LS-PT-AE-005-001 — Air Exercise 5: Attitudes and Movements
• LS-PT-AE-006-001 — Air Exercise 6: Straight-and-Level Flight
• LS-PT-AE-008-001 — Air Exercise 8: Descending
• LS-PT-AE-009-001 — Air Exercise 9: Turning
• LS-PT-AE-010-001 — Air Exercise 10: Flight for Range and Endurance
• LS-PT-AE-011-001 — Air Exercise 11: Slow Flight
• LS-PT-AE-012-001 — Air Exercise 12: Stalls
• LS-PT-AE-014-001 — Air Exercise 14: Spiral Dives
• LS-PT-AE-015B-001 — Air Exercise 15B: Side Slips & Crosswind Landings
• LS-PT-AE-015C-001 — Air Exercise 15C: Accident Prevention — Skids & Skidding Turns
• LS-PT-AE-017-001 — Air Exercise 17: Circuit
• LS-PT-AE-018-001 — Air Exercise 18: Approach and Landing
• LS-PT-AE-021-001 — Air Exercise 21: Precautionary Landing
• LS-PT-AE-022-001 — Air Exercise 22: Forced Landing
Related Weather Topics:
• Surface wind
• Crosswind
• Tailwind
• Headwind
• Wind direction
• Wind velocity
• Gusts
• Turbulence
• Wind gradient
• Mechanical turbulence
• Approach-path changes caused by wind
• Runway wind assessment
Related Navigation Topics:
• Runway centreline tracking
• Base-to-final geometry
• Aiming-point control
• Visual glidepath assessment
• Circuit spacing
• Ground track versus aircraft heading
• Drift recognition
• Landing-area assessment
• Forced-approach planning
Related Human Factors:
• Plan continuation bias
• Unstable approach recognition
• Overshoot reluctance
• Fixation on the runway
• Fixation on the airspeed indicator
• Workload during base-to-final transition
• Perceptual judgment of height and glidepath
• Control-input confusion
• Startle caused by rapid sink-rate increase
• Low-altitude risk perception
• Decision-making under time pressure
Related Emergencies:
• Engine failure
• Forced landing
• Flap malfunction, where POH-approved procedures permit slipping
• Excess altitude during a precautionary landing
• High approach to an emergency landing area
• Unstable approach requiring an overshoot
• Inadvertent skid near the stall
• Unreliable airspeed indications during a slip
Related Articles:
Proposed: ART-PT-AE15A-001 — Why a Slip Creates Drag Without Excessive Airspeed
Proposed: ART-PT-AE15A-002 — When a High Approach Should Become an Overshoot
Proposed: ART-PT-AE15A-003 — Slip Versus Skid: The Critical Difference
Related Diagrams:
Proposed: DIA-PT-AE15A-001 — Forward-Slip Control Inputs
Proposed: DIA-PT-AE15A-002 — Aircraft Heading Versus Flight Path During a Forward Slip
Proposed: DIA-PT-AE15A-003 — Slipping Turn Flight Path
Proposed: DIA-PT-AE15A-004 — Forward Slip Versus Skid
Proposed: DIA-PT-AE15A-005 — Relative Airflow Across the Fuselage
Related Illustrations:
Proposed: ILL-PT-AE15A-001 — Outside Visual Picture During a Forward Slip
Proposed: ILL-PT-AE15A-002 — Runway Position Relative to the Nose
Proposed: ILL-PT-AE15A-003 — Pilot Control Position During a Slip
Related Infographics:
Proposed: INF-PT-AE15A-001 — Altitude Into Drag, Not Speed
Proposed: INF-PT-AE15A-002 — Bank, Opposite Rudder, Hold Speed
Proposed: INF-PT-AE15A-003 — Forward Slip Recognition Cues
Proposed: INF-PT-AE15A-004 — High-Approach Decision Framework
Proposed: INF-PT-AE15A-005 — Slip Versus Skid
Proposed: INF-PT-AE15A-006 — Forward-Slip Entry, Maintenance, and Recovery
Related Videos:
Proposed: VID-PT-AE15A-001 — Forward-Slip Instructor Demonstration
Proposed: VID-PT-AE15A-002 — Small Slip Versus Large Slip
Proposed: VID-PT-AE15A-003 — Slipping Turn Demonstration
Proposed: VID-PT-AE15A-004 — Smooth Recovery and Approach Continuation
Related Animations:
Proposed: ANI-PT-AE15A-001 — Relative Airflow and Drag During a Slip
Proposed: ANI-PT-AE15A-002 — Control Inputs and Aircraft Response
Proposed: ANI-PT-AE15A-003 — Forward Slip Versus Skidding Turn
Related Worksheets:
Proposed: WS-PT-AE15A-001 — Forward-Slip Control Relationship Worksheet
Proposed: WS-PT-AE15A-002 — High-Approach Decision Scenarios
Proposed: WS-PT-AE15A-003 — Aircraft POH Slip-Limitation Review
Related Checklists:
Proposed: CL-PT-AE15A-001 — Forward-Slip Practice Checklist
Proposed: CL-PT-AE15A-002 — High-Approach Slip-or-Overshoot Decision Checklist
Related Quizzes:
Proposed: QZ-PT-AE15A-001 — Forward Slips & Slipping Turns Knowledge Check
Proposed: QZ-PT-AE15A-002 — Slip Versus Skid Scenario Assessment
Related Downloads:
Proposed: DL-PT-AE15A-001 — Forward-Slip Quick Reference
Proposed: DL-PT-AE15A-002 — Slip Training Debrief Sheet
Related Glossary Terms:
Proposed: GL-PT-FORWARD-SLIP
Proposed: GL-PT-SLIPPING-TURN
Proposed: GL-PT-SIDE-SLIP
Proposed: GL-PT-SKID
Proposed: GL-PT-CROSSED-CONTROLS
Proposed: GL-PT-RELATIVE-AIRFLOW
Proposed: GL-PT-PARASITE-DRAG
Proposed: GL-PT-COORDINATED-FLIGHT
Proposed: GL-PT-GROUND-TRACK
Proposed: GL-PT-OVERSHOOT
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CAUSE & EFFECT
Cause-and-Effect Relationships:
• If bank is introduced without sufficient coordinating rudder, the aircraft begins to slip toward the lowered wing.
• If opposing rudder is applied against the bank, the aircraft’s nose and longitudinal axis become increasingly misaligned with the relative airflow.
• If the aircraft becomes more misaligned with the relative airflow, parasite drag increases.
• If drag increases while pitch attitude and power remain appropriately controlled, the rate of descent increases without a comparable increase in airspeed.
• If the nose is lowered excessively during the slip, airspeed may increase despite the additional drag.
• If the nose is allowed to rise, airspeed and stall margin decrease.
• If bank and opposing rudder are increased together, the amount of slip and rate of descent generally increase within aircraft limitations.
• If bank and opposing rudder are reduced together, the amount of slip and rate of descent decrease.
• If opposing rudder is insufficient during a forward slip, the aircraft may turn away from the intended flight path.
• If the flight controls reach their available limit, the slip cannot be increased further.
• If airflow around the pitot or static source is disturbed, the airspeed indicator may become unreliable.
• If the pilot chases an erroneous airspeed indication, pitch attitude and true stall margin may be mismanaged.
• If the pilot relies on the outside attitude and known aircraft sight picture, airspeed control is more reliable during indication errors.
• If the slip is recovered abruptly, the aircraft may yaw, roll, change flight path, or produce uncomfortable control transients.
• If the pilot fails to establish the correct descent attitude after recovery, the aircraft may lose speed and land heavily.
• If excessive rudder is applied in the direction of a turn, the aircraft enters a skid rather than a slip.
• If a skid occurs near the stall, autorotation and spin risk increase.
• If a slipping turn is correctly managed, the aircraft can continue changing heading while increasing drag and controlling descent.
• If a slip is continued too close to the ground, insufficient height may remain to recover, stabilize, or correct errors.
• If the approach cannot be stabilized after the slip, an overshoot is required.
• If the POH/AFM prohibits a flap-and-slip combination, that combination must not be used.
• If the approach is high but otherwise controlled and sufficient recovery height remains, an appropriate slip may restore the desired descent profile.
• If the approach is high, unstable, rushed, or outside safe control margins, increasing the slip may worsen the situation and the pilot should overshoot.
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DISCOVERY
Discovery Keywords:
forward slip, slipping turn, aircraft slip, cross-controlled flight, crossed controls, high approach, steep descent, increase rate of descent, altitude management, drag management, energy management, bank and opposite rudder, opposing rudder, forward-slip recovery, slipping approach, slip aerodynamics, slip versus skid, uncoordinated flight, flight-path control, runway alignment, base-to-final turn, forced approach, flap malfunction, pitot-static error, unreliable airspeed, approach stabilization, overshoot decision
Alternative Search Phrases:
• How do I lose altitude without gaining airspeed?
• How does a forward slip work?
• How do you enter a forward slip?
• How do you recover from a forward slip?
• What controls airspeed during a slip?
• Why does a slip increase descent rate?
• What is a slipping turn?
• Is a forward slip safe?
• What is the difference between a slip and a skid?
• Can an aircraft stall in a slip?
• Why is the airspeed indicator inaccurate in a slip?
• Can I slip with flaps extended?
• Which wing should be lowered in a forward slip?
• When should I recover from a slip?
• Should I slip or overshoot when high on final?
• How do you maintain runway centreline during a forward slip?
• How is a slipping turn used during a forced approach?
Abbreviations:
• PPL — Private Pilot Licence
• CPL — Commercial Pilot Licence
• PTR — Pilot Training Record
• TC — Transport Canada
• FTM — Flight Training Manual
• FIG — Flight Instructor Guide
• POH — Pilot’s Operating Handbook
• AFM — Aircraft Flight Manual
• ASI — Airspeed Indicator
• IAS — Indicated Airspeed
• AoA — Angle of Attack
• AGL — Above Ground Level
• SOP — Standard Operating Procedure
• FTU — Flight Training Unit
Common Misspellings:
• foward slip
• forwardslip
• side slip
• sideslip
• side-slip
• sliping
• slipping turn
• slip turn
• skiding
• skidding
• cross control
• cross-controlled
• uncoordinated flight
• unco-ordinated flight
• pitot static
• pitot-static
Not To Be Confused With:
• Side slip used for crosswind correction
• Skid or skidding turn
• Crabbed crosswind approach
• Coordinated descending turn
• Spiral dive
• Spin
• Stall
• Steep approach produced by flap extension
• Nose-low acceleration
• Rudder-only yaw
• Unintentional uncoordinated flight
• Aerobatic cross-control manoeuvres
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AUTHORITY
Primary References:
• Transport Canada Flight Training Manual — Exercise 15: Slipping
• Transport Canada Flight Instructor Guide — Aeroplane, TP 975, Exercise 15
• Transport Canada Flight Test Guide — Private Pilot Licence — Aeroplane, TP 13723E, Exercise 15
• Applicable aircraft POH/AFM
Supporting References:
• Transport Canada Flight Test Guide — Commercial Pilot Licence — Aeroplane, TP 13462E
• Flight training unit operating procedures
• Aircraft manufacturer training material
• Instructor briefings and aircraft-specific procedures
Transport Canada References:
• Flight Training Manual — Exercise 15: Slipping
• Flight Instructor Guide — Aeroplane, TP 975, Exercise 15: Side-slipping
• Flight Test Guide — Private Pilot Licence — Aeroplane, TP 13723E, Exercise 15: Slipping
• Flight Test Guide — Commercial Pilot Licence — Aeroplane, TP 13462E, Exercise 15: Slipping
• Personnel Licensing and Training Standards — Standard 428, Schedule 3
The Transport Canada Flight Instructor Guide identifies “losing excess height, crosswind landing technique, and slipping turns as practical uses of the exercise”. It also calls for instruction on entry, aircraft attitude, yaw and bank control, flight-path control, recovery, incorrect recovery, and instrument indications. (Transport Canada)
Aircraft References:
• POH/AFM approved manoeuvres
• POH/AFM operating limitations
• POH/AFM flap-use limitations
• POH/AFM landing procedures
• POH/AFM airspeed limitations
• POH/AFM pitot-static system information
• Aircraft placards
• Aircraft manufacturer guidance concerning prolonged slips, fuel flow, control effectiveness, or airspeed indication errors
Regulatory References:
• CAR 602.07 — Aircraft Operating Limitations
• Standard 428, Schedule 3 — Personnel Licensing and Training Standards
• Applicable aircraft placards and approved operating limitations
Industry References:
• Aircraft manufacturer POH/AFM
• Flight training unit SOPs
• Approved aircraft checklists
• Instructor standardization material
• Operator-specific stabilized-approach and overshoot policies, where applicable
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AI CONTEXT
Knowledge Node Summary:
This node teaches the learner how forward slips and slipping turns use controlled crossed-control inputs to increase drag and rate of descent without a significant increase in airspeed. It covers recognition, aerodynamics, control relationships, entry, maintenance, adjustment, recovery, operational applications, aircraft limitations, airspeed indication errors, and the critical distinction between a slip and a skid.
Educational Purpose:
This content prepares early flight-training students to use slipping safely as an adjustable energy-management technique while developing the judgment to recognize when a high approach can be corrected and when an overshoot is the safer response.
Context Window:
Before this lesson, the learner should understand aircraft attitudes, primary flight controls, descending, turning, slow flight, stalls, and coordinated flight. During the lesson, the learner develops intentional cross-control awareness and learns to regulate descent through drag. After this lesson, the learner applies the same control principles to side slips, crosswind landings, circuit work, forced approaches, precautionary landings, and skid prevention.
AI Retrieval Context:
Air Exercise 15A is a Canadian Transport Canada-aligned early-PTR flight-training lesson for student pilots. It explains forward slips and slipping turns as intentional crossed-control manoeuvres used to increase drag and rate of descent while maintaining a safe airspeed and controlled flight path. The lesson emphasizes bank, opposing rudder, elevator-controlled airspeed, smooth recovery, aircraft-specific POH/AFM limitations, possible pitot-static indication errors, and the distinction between a controlled slip and a hazardous skid. It also teaches that slipping must not be used to salvage an approach that is unstable or lacks sufficient recovery height; an overshoot is required when safe approach criteria cannot be restored.
Related Knowledge Families:
• Aircraft Attitudes and Movements
• Aircraft Control
• Coordinated and Uncoordinated Flight
• Descending Flight
• Turning Flight
• Slow Flight
• Stall and Spin Awareness
• Spiral Dive Recognition
• Approach Energy Management
• Crosswind Control
• Circuit Operations
• Approach and Landing
• Forced Landing
• Precautionary Landing
• Stabilized Approach Decision-Making
• Overshoot and Go-Around Judgment
Retrieval Priority:
Core
AI Confidence Notes:
• General slip principles apply broadly, but exact entry technique, flap compatibility, control limits, recovery technique, and airspeed reliability are aircraft-specific.
• The POH/AFM takes precedence over generalized training guidance.
• Do not infer that slips with flaps are permitted unless the applicable aircraft documentation allows them.
• Do not infer that the airspeed indicator remains accurate during a slip.
• “Opposing rudder” describes rudder opposing the normal yaw or turn produced by the bank; it does not mean a fixed or maximum rudder input.
• A slipping turn must not be described as a skidding turn. Significant skidding is unacceptable under the Transport Canada Exercise 15 flight-test criteria. (Transport Canada)
• A forward slip is not automatically appropriate merely because the aircraft is high. Approach stability, remaining height, runway alignment, aircraft limitations, and overshoot options must be considered.
• Side slips used for crosswind landing are taught separately in Air Exercise 15B.
• Skids and base-to-final accident prevention are taught separately in Air Exercise 15C.
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TEACHING FRAMEWORK
Teach As:
Turn altitude into drag—not speed.
Mental Model:
Think of the aircraft as being deliberately presented partly sideways to the airflow. The bank establishes the slip, rudder regulates where the nose points and how quickly the aircraft turns, and elevator protects the desired attitude and airspeed.
Decision Rule:
Use a slip only when:
• Excess altitude exists.
• Airspeed and aircraft control remain safe.
• The aircraft permits the manoeuvre in its current configuration.
• The intended flight path can still be maintained.
• Sufficient height remains for smooth recovery and stabilization.
If those conditions cannot be met, overshoot.
Memory Aid:
Bank — Opposite Rudder — Hold Speed — Recover Smoothly
Expanded Recall Phrase:
Bank creates the slip.
Rudder regulates the nose and turn.
Elevator controls the speed.
Judgment decides whether to continue or overshoot.
Instructor Notes:
• Begin with a preparatory ground explanation of the control relationship and difference between slip and skid.
• Practise entry, maintenance, adjustment, and recovery at altitude before applying the manoeuvre during an approach.
• Demonstrate small, medium, and larger slips to show that the manoeuvre is adjustable.
• Demonstrate both left and right slips while explaining any difference in airspeed indication.
• Use a known outside attitude and sight picture rather than allowing the student to chase the airspeed indicator.
• Clearly distinguish aircraft heading, longitudinal-axis direction, ground track, and actual flight path.
• Avoid teaching that rudder simply “stops the turn” in every case. Rudder regulates yaw and rate of turn; a slipping turn intentionally retains some turn.
• Emphasize that bank and rudder must be adjusted according to the desired flight path rather than applied as a memorized fixed amount.
• Demonstrate the recovery early enough to establish a safe, normal descent attitude before landing.
• Discuss the risk of losing speed during recovery and the need to re-establish the correct approach attitude.
• Do not allow the student to use a steep slip to rescue a rushed, unstable, or poorly planned approach.
• Include at least one scenario where the correct response is an overshoot rather than a slip.
• During base-to-final demonstrations, explicitly identify the direction of rudder application and contrast it with a hazardous skid.
• Review the aircraft POH/AFM before flight for flap restrictions, prolonged-slip limitations, fuel-system considerations, and known indication errors.
• Keep initial approach applications conservative and increase complexity only after the learner demonstrates consistent control at altitude.
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VERSION CONTROL
Version:
1.0
Author:
Normand Bidal — Albatross Pilot Pathway
Technical Reviewer:
To be assigned
Educational Reviewer:
To be assigned
Date Created:
2026-07-15
Last Updated:
2026-07-15
Review Frequency:
Annual, when Transport Canada references change, or when aircraft-specific guidance is added
Next Review Date:
2027-07-15
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COPYRIGHT
© 2026 Albatross Pilot Pathway, a division of 10250300 Manitoba Inc. All rights reserved.
COPYRIGHT © 2026 Albatross Pilot Pathway, a division of 10250300 Manitoba Inc. All rights reserved.