Why Handover and Takeover Discipline Matters in Sailplane Instruction
By Christopher Thorpe
Flight instruction depends on shared access to the controls. That is both its strength and one of its greatest hazards. In a two-seat sailplane, the instructor must allow the student to manipulate the aircraft, make mistakes, recognise errors and develop judgement. At the same time, the instructor remains responsible for maintaining a safe margin and intervening before a developing situation becomes unrecoverable.
That balance only works if there is never any doubt about who has control of the aircraft.
Australian aviation case law has recently highlighted, in clear and practical terms, that handover and takeover are not minor cockpit courtesies. They are safety-critical procedures. They are also legally significant because, after an accident, a court may examine not merely whether an instructor was experienced or well-intentioned, but whether the instructor used a clear, recognised and disciplined control-transfer process at the moment it mattered.
A recent and particularly relevant case is Ripper v Gobel Aviation Pty Ltd (in liq) [2024] VCC 1907, decided by Judge Robertson in the County Court of Victoria on 19 December 2024. That decision was considered on appeal in Gobel Aviation Pty Ltd (in liq) v Ripper [2025] VSCA 344, decided by the Victorian Court of Appeal on 23 December 2025.
Leave to appeal was granted, but the appeal was dismissed.
For sailplane instructors, the lesson is direct: control ambiguity is a hazard. Silent intervention is a hazard. Riding the controls is a hazard. Unannounced corrective inputs, particularly during launch, approach, landing or any other high-workload phase, can create precisely the uncertainty the instructor is trying to avoid.
The safety problem: two pilots, one aircraft
A sailplane cannot be safely flown by two people making independent, uncoordinated inputs. Dual controls are provided so instruction can occur, not so that responsibility can become shared, blurred or improvised.
The student may believe they are flying. The instructor may believe they are only assisting. Both may be applying pressure to the controls. Neither may fully understand what the other is doing. In a benign phase of flight, this may merely be untidy. Near the ground, on launch, during aerotow, in a circuit or during recovery from an incipient loss of control, it can become dangerous within seconds.
The most dangerous form of control ambiguity is often subtle. It is not usually a dramatic struggle for control. It may be an instructor 'helping' with rudder on aerotow, easing the stick during a flare, correcting a wing drop, or preventing a developing overbank without saying anything. The student feels an aircraft response, does not know it was caused by the instructor, and may add their own input in the same or opposite direction. The result may be over-control, control conflict, surprise, startle or delayed recovery.
This is why the standard must be simple and non-negotiable:
One pilot flies the aircraft at a time.
The legal lesson from Ripper v Gobel Aviation
The litigation in Ripper v Gobel Aviation Pty Ltd (in liq) [2024] VCC 1907 arose from a training accident in which control of the aircraft became central to the dispute.
Although the aircraft was not a sailplane, the instructional principle is directly relevant to gliding: where two pilots have access to the controls, there must be no ambiguity about who is flying the aircraft.
The case is important for instructors because the court did not treat handover and takeover as informal training habits. It treated them as recognised safety procedures relevant to duty of care, breach, causation and damages.
The critical issue was not simply that an instructor made a control input. Instructors must sometimes intervene. The issue was that the instructor made a control input without clearly communicating that he was taking over. The student continued to believe he was flying the aircraft. The court accepted that the resulting control ambiguity and uncoordinated inputs contributed to the accident sequence.
The Victorian Court of Appeal in Gobel Aviation Pty Ltd (in liq) v Ripper [2025] VSCA 344 upheld the trial judge’s analysis. The appeal decision recorded that it was essentially common ground that only one person should fly or otherwise control the aircraft at any one time, particularly by using the rudder pedals and control stick. It also recorded that there was a handover and takeover process between student and instructor, and that observance of that process was vital to ensure there was never any doubt about who had control of the aircraft.
That is a powerful lesson for all instructional flying, including gliding. The instructor’s responsibility is not only to be capable of taking control, but to ensure that the student knows control has been taken.
The case also illustrates how closely a court may examine the exact sequence of events: what was briefed, who was pilot in command, who was physically manipulating the controls, what words were used, whether the student knew the instructor had intervened, and whether the accident would probably have been avoided if the recognised handover/takeover procedure had been followed.
For a sailplane instructor, the litigation message is blunt: after an accident, “I was only helping” may not be a satisfactory explanation if the student did not know you had taken control.
The relevance of Campbell v Hay
Campbell v Hay [2013] NSWDC 11, decided by the District Court of New South Wales on 19 February 2013, provides an important contrast. In that case, the plaintif was a student in a light aircraft when the engine stopped and the instructor was forced to take over the controls and conduct a forced landing. The claim was dismissed because the court found that the injury resulted from the materialisation of an obvious risk of a dangerous recreational activity under s 5L of the Civil Liability Act 2002 (NSW).
For gliding, that finding needs to be understood carefully. It does not mean instructors are immune from liability because flying is risky. It does not mean clubs can rely on the inherent risk of aviation as a substitute for disciplined instructional practice. Nor does it mean that a student or passenger accepts the risk of avoidable instructional failure merely by participating in aviation.
The more useful lesson is that courts may distinguish between inherent aviation risk and avoidable operational failure. Engine failure, forced landing risk and the general risk that something may go wrong in flight may, depending on the facts and the applicable legislation, be treated as obvious risks of recreational aviation. But a failure by an instructor to use a proper control-transfer procedure is different. That is not an unavoidable feature of flight. It is a preventable procedural failure.
For instructors, the practical conclusion is clear: do not assume that the inherent risks of gliding will excuse poor cockpit discipline. A court may accept that aviation carries obvious risks while still finding, on different facts, that a particular accident was caused by an instructor’s failure to manage those risks properly.
Why this matters even more in sailplanes
Sailplanes are unforgiving of delay. There is no surplus thrust to repair a poor energy state. Launches develop quickly. Circuits compress workload. Low-level errors leave little time for analysis or negotiation. On aerotow, a small directional or vertical displacement can escalate rapidly. On winch launch, pitch and attitude errors can become critical almost immediately. During landing, late instructor intervention may occur close to the ground, at low energy, and with limited recovery options.
These characteristics make handover/takeover discipline more important, not less. Instructors must be particularly alert to control ambiguity during:
* aerotow launch, especially wing drop, yaw, vertical displacement, slack rope or over-controlling;
* winch or auto launch, especially pitch attitude, wing level and early launch failure scenarios;
* approach and landing, especially late flare, ballooning, undershoot, overshoot or directional control problems;
* stall, spin and unusual attitude training;
* circuit correction, especially when a student is low, fast, slow, overshooting or task saturated;
* type conversion flights where control feel, sight picture and response may be unfamiliar;
* flights with experienced pilots where authority may be socially harder to assert.
In all of these situations, the instructor’s authority must be immediate, clear and unmistakable.
The standard words must be standard
Every instructor should use a consistent verbal protocol. The exact words may vary between organisations, but the principle should not.
A simple model is:
Instructor: “My aircraft” or “I have control”.
Student: “Your aircraft” or “You have control”.
When returning control:
Instructor: “Your aircraft” or “You have control".
Student: “My aircraft” or “I have control”.
The exchange should be verbal, positive and confirmed. It should not be replaced by a nod, a gesture, a vague “okay” or an assumption. The purpose is not etiquette. The purpose is to remove ambiguity.
In time-critical situations, the instructor may have to take control immediately while making the call. Safety comes first. But even then, the words should be spoken clearly and as early as possible:
“My aircraft” or “I have control”.
The student should be trained from the first flight that this command requires immediate release of the controls unless specifically directed otherwise. The instructor should then confirm physically and visually that the student has released pressure.
Do not ride the controls
One of the most common instructional traps is 'shadow flying' the student. The instructor keeps a light touch on the stick or rudder, adds small corrections, and believes this is harmless because the inputs are subtle.
It is not harmless
Riding the controls corrupts the training exercise and weakens the student’s learning. The student may not feel the true aircraft response. They may believe they are performing better than they are. The instructor may mask errors until the student is later exposed to them solo. Worse, the student may sense resistance or movement in the controls and respond with additional input, creating conflict.
There are only three acceptable states:
1. The student has control and the instructor is monitoring;
2. The instructor has control and the student has relinquished control;
3. The instructor is deliberately demonstrating, with control state clearly briefed and understood.
Anything else risks ambiguity.
Intervention must be early, clear and decisive.
Good instruction is not measured by how late an instructor can save a situation. It is measured by how well the instructor prevents the situation from reaching that point.
A late takeover often occurs after the student is already overloaded, startled or fixated. At that stage, the student may not process verbal commands quickly. They may freeze, resist or continue applying control pressure unintentionally. The instructor then faces both an aircraft problem and a human factors problem.
Early intervention avoids this. It preserves margin, reduces startle and allows the instructor to teach from a controlled situation rather than rescue from a deteriorating one.
Early, positive intervention is also consistent with the Gliding Australia Training Principles and Techniques Manual, which treats timely instructor intervention as a core safety skill rather than a last-moment rescue technique.
The instructor should intervene before:
* the student’s workload exceeds their capacity;
* the aircraft approaches a low-energy or high-risk state;
* directional control becomes uncertain on launch or landing;
* the glider is close to exceeding safe attitude, speed, bank or yaw limits;
* the student’s actions suggest confusion, fixation or delayed response;
* the instructor feels tempted to 'just help a little' without saying anything.
That last point is important. The urge to make a small silent correction is often the warning sign that a formal takeover is required.
Brief it before flight
Handover/takeover should be briefed before every instructional flight, not assumed because the student has heard it before.
The briefing should include:
* who is pilot in command;
* who will handle each phase of flight;
* the exact words used for taking and giving control;
* the requirement for the student to release controls immediately when instructed;
* whether the instructor may demonstrate particular exercises;
* what will happen during launch, approach, landing and emergencies;
* how the instructor will intervene if safety margins reduce.
For early students, this briefing should be explicit and repeated. For advanced students, it should still be included, because advanced students may be more likely to resist, assist or second-guess during a surprise event. For mutual flying or checks with experienced pilots, it is equally important because assumptions about authority can be stronger and more dangerous.
Debrief and document control-transfer issues
If a flight involves a late takeover, student resistance, unclear response, simultaneous inputs, or any uncertainty about who had control, it should be debriefed properly. The debrief should not be punitive. It should answer four questions:
1. What was happening to the aircraft?
2. What did each pilot believe about who had control?
3. Why was it necessary for the instructor to intervene?
4. What will be done differently next time?
Where the event was significant, it should be recorded in the student’s training notes or club safety system. That record protects future instructors, supports the student’s development, and demonstrates that the issue was recognised and managed.
In litigation, records matter. Courts may examine not only what people later say they normally do, but what the evidence shows was briefed, practised, recorded and reinforced.
Practical instructor rules
The following rules should be treated as core instructional discipline:
1. Never allow doubt about who has control.
2. Do not touch or move the controls while the student has control unless you are taking over, guarding against an immediate hazard, or the action has been clearly briefed as part of a demonstration.
3. If you need to correct by control input, take control first.
4. Use standard words every time.
5. Require a positive response where time permits.
6. Train students to release immediately and completely.
7. Intervene early enough that the takeover can be calm rather than desperate.
8. Do not use silent inputs to preserve student confidence. Safety is more important than protecting the student from knowing they made an error.
9. After any ambiguous control event, debrief it directly.
A culture issue, not just a cockpit technique
Handover/takeover discipline reflects the broader culture of an instructional organisation. If instructors routinely ride controls, make silent corrections, or rely on informal habits, students learn that ambiguity is normal. If senior instructors tolerate this, it becomes embedded.
Conversely, when instructors consistently use disciplined control-transfer language, students learn that authority, clarity and procedural discipline are normal features of safe flying.
This matters beyond the training flight. Today’s student becomes tomorrow’s pilot, passenger-carrying pilot, coach or instructor. The habits modelled in the back seat propagate through the club.
Conclusion
Proper handover and takeover is not a formality. It is one of the simplest and most important safeguards in dual flying.
The safety principle is straightforward: only one person can fly the aircraft at a time, and both occupants must know who that person is.
The litigation principle is equally clear. After an accident, courts may look closely at whether the instructor used a clear and recognised control-transfer procedure. Aviation carries inherent risks, but that does not excuse avoidable ambiguity, silent intervention, or uncoordinated control inputs.
For sailplane instructors, the professional standard should be uncompromising:
Brief it.
Say it.
Confirm it.
Do it early.
Never leave control in doubt.
Instructing reference
Gliding Australia OPS 003 Training Principles and Techniques Manual.
Case references
Ripper v Gobel Aviation Pty Ltd (in liq) [2024] VCC 1907, County Court of Victoria, Judge Robertson, 19 December 2024.
Gobel Aviation Pty Ltd (in liq) v Ripper [2025] VSCA 344, Supreme Court of Victoria Court of Appeal, Niall CJ, Beach JA and O’Meara AJA, 23 December 2025.
lCampbell v Hay [2013] NSWDC 11, District Court of New South Wales, Marks ADCJ, 19 February 2013.
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About the Author:
Christopher Thorpe is the former Executive Manager Operations for Gliding Australia and has extensive experience in aviation safety, training and gliding operations management. This article is provided as an educational resource for the gliding community.
