### Q31: During a winch launch, cable tension suddenly disappears just after reaching the full climb attitude. What should the pilot do? ^t70q31 - A) Inform the winch driver by alternating aileron inputs - B) Pull on the elevator to restore cable tension - C) Push firmly forward and release the cable immediately - D) Push slightly and wait for the cable tension to return **Correct: C)** > **Explanation:** A sudden loss of cable tension during the steep climb phase of a winch launch must be treated as a cable break. The glider is at a high nose-up attitude with rapidly decreasing airspeed, making an imminent stall the greatest danger. The pilot must push the stick firmly forward to lower the nose and regain flying speed, then release the cable immediately. Option A (aileron signals) wastes critical time in a life-threatening situation. Option B (pulling the elevator) would pitch the nose even higher, guaranteeing a stall. Option D (waiting) risks a full stall before any recovery is possible. ### Q32: Before launching with a parallel-cable winch, the pilot notices the second cable lying close to the glider. What should be done? ^t70q32 - A) Keep watching the second cable and release after take-off if needed - B) Release the cable immediately and inform the airfield controller by radio - C) Continue with the normal take-off and inform the controller after landing - D) Proceed with the launch using opposite rudder to steer away from the second cable **Correct: B)** > **Explanation:** A second cable lying close to the glider before launch is a serious entanglement hazard. If the cable wraps around the glider or its own launch cable during the take-off run, it could cause catastrophic loss of control, structural damage, or prevent the pilot from releasing the cable. The only safe action is to abort the launch immediately by releasing the cable and informing the controller so the hazard can be cleared. Option A delays action until after take-off, when entanglement may already have occurred. Options C and D both proceed with the launch despite the known hazard, which is unacceptable. ### Q33: What is the function of the weak link (breaking point) on a winch cable? ^t70q33 - A) It limits the rate of climb during the winch launch - B) It prevents the glider airframe from being overstressed - C) It provides automatic cable release after the winch launch - D) It protects the winch from being overrun by the glider **Correct: B)** > **Explanation:** The weak link is a fusible element in the winch cable system designed to break at a predetermined load before the glider's airframe structural limits are exceeded. If cable tension becomes dangerously high -- due to excessive winch power, a sudden wind gust, or the pilot pitching up too steeply -- the weak link fails first, protecting the glider from structural damage. Option A is incorrect because climb rate is controlled by the winch operator and pilot, not the weak link. Option C is wrong because the cable is normally released by the pilot at the top of the launch. Option D describes protecting the winch, but the weak link is calibrated to the glider's structural limits. ### Q34: During the final phase of a winch launch, the pilot keeps pulling back on the elevator. The automatic release trips under high wing loading. What are the consequences? ^t70q34 - A) Only this sudden jerk ensures the cable releases properly - B) This technique compensates for insufficient wind correction - C) Extreme structural stress is placed on the glider airframe - D) A higher launch altitude can be achieved using this technique **Correct: C)** > **Explanation:** Maintaining strong back pressure on the elevator at the moment the cable releases -- whether by the pilot or the automatic back-release -- causes a violent pitch-up as the restraining force of the cable suddenly disappears while the elevator is still commanding nose-up. This creates extreme structural loads (high positive g-forces) on the airframe, potentially exceeding design limits and causing structural failure. The correct technique is to progressively ease back pressure as the launch nears its peak. Option A misunderstands the release mechanism. Option B confuses wind correction with pitch control. Option D wrongly encourages a dangerous practice. ### Q35: An off-field landing in mountainous terrain is necessary and the only available site is steeply inclined. How should the approach be flown? ^t70q35 - A) Fly the approach at minimum speed with a careful flare upon reaching the landing site - B) Approach with extra speed, then make a quick flare to match the slope gradient - C) Approach parallel to the ridge with headwind, according to the prevailing wind - D) Approach down the ridge at increased speed, adjusting pitch to follow the ground **Correct: B)** > **Explanation:** Landing on a steeply inclined slope requires extra approach speed to provide adequate control authority and safety margin in the turbulent and unpredictable conditions typical of mountainous terrain. A quick, decisive flare is needed to match the glider's flight path to the slope gradient at the moment of touchdown, preventing the nose from striking the uphill surface. Option A (minimum speed) leaves no margin for wind shear or turbulence common near slopes. Option C (parallel approach) does not address the need to land uphill. Option D (approaching downhill) means landing with a tailwind component and increasing groundspeed, making the landing extremely dangerous. ### Q36: At 6000 m MSL, the pilot realises that the oxygen supply will run out within minutes. What should be done? ^t70q36 - A) After oxygen runs out, remain at this altitude for no more than 30 minutes - B) Reduce oxygen consumption by breathing slowly - C) Deploy spoilers and descend at the maximum permissible speed - D) At the first sign of hypoxia, begin descending at the maximum allowed speed **Correct: C)** > **Explanation:** At 6000 m, the time of useful consciousness without supplemental oxygen is only a few minutes. The pilot must begin an immediate emergency descent using full spoilers and the maximum permissible speed to reach breathable altitude (below approximately 3000 m) as quickly as possible. Option A is dangerously wrong -- remaining at 6000 m without oxygen for 30 minutes would result in unconsciousness and death. Option B (slow breathing) does not meaningfully extend oxygen duration at this altitude. Option D (waiting for symptoms) is too late -- hypoxia impairs judgment first, and the pilot may not recognise their own deterioration. ### Q37: What colour is the emergency canopy release handle? ^t70q37 - A) Blue - B) Yellow - C) Red - D) Green **Correct: C)** > **Explanation:** Emergency controls in aircraft are universally colour-coded red to ensure instant recognition under stress, in poor lighting, or when the pilot is disoriented after an accident. The emergency canopy jettison handle must be immediately identifiable because rapid egress may be needed following a crash or fire. This red colour coding is an international aviation standard applied consistently across all aircraft types. Options A (blue), B (yellow), and D (green) are used for other cockpit functions but never for emergency release mechanisms. ### Q38: Why must trim masses or lead ballast be firmly secured in a glider? ^t70q38 - A) To ensure the maximum allowed mass is not exceeded - B) To prevent them from jamming controls or causing a centre-of-gravity shift - C) To guarantee a comfortable seating position for the pilot - D) To protect the pilot from injury during turbulent thermal flight **Correct: B)** > **Explanation:** Ballast and trim masses in a glider must be rigidly secured because any movement during flight can have catastrophic consequences. A loose weight sliding aft shifts the centre of gravity beyond the approved limit, potentially making the aircraft uncontrollable in pitch. If a weight slides into the control linkage area, it could physically jam the rudder, elevator, or aileron cables, preventing the pilot from controlling the aircraft. Option A (maximum mass) is a separate loading consideration, not about securing. Option C (comfort) is trivial compared to the safety issue. Option D (injury protection) is a secondary concern to the primary risk of loss of control. ### Q39: During a winch launch, the airspeed indicator fails after reaching the full climb attitude. What should the pilot do? ^t70q39 - A) Push the stick forward, release the cable, and fly a short circuit at minimum speed - B) Continue the launch to normal altitude, then use the horizon and airstream noise for an immediate circuit and landing - C) Continue to normal altitude, then use visual and audio cues to proceed with the planned flight - D) Try to restore the ASI by making abrupt speed changes during the launch **Correct: B)** > **Explanation:** If the ASI fails during a winch launch that is otherwise proceeding normally, the pilot can continue to normal launch altitude using the horizon for pitch reference and airstream noise as an approximate speed indicator. After release, the pilot should fly an immediate circuit and land, using the same visual and auditory cues. Option A (immediate release and short circuit) may be overly hasty if the launch is stable. Option C is unsafe -- continuing a cross-country flight without a functioning ASI means flying without reliable speed information, which is dangerous particularly in varying conditions. Option D (abrupt speed changes) could destabilise the launch and is not a troubleshooting method. ### Q40: Why is launching with the centre of gravity beyond the aft limit prohibited? ^t70q40 - A) Because the maximum permissible speed would be significantly reduced - B) Because the increased nose-down moment could not be compensated - C) Because structural limits might be exceeded - D) Because elevator authority may be insufficient to control the flight attitude **Correct: D)** > **Explanation:** With the centre of gravity at or beyond the aft limit, the moment arm between the CG and the elevator is shortened, reducing the elevator's ability to generate a corrective pitching moment. In extreme cases, the pilot may be unable to push the nose down to prevent a stall or recover from a pitch-up, particularly during the critical phases of winch launch or aerotow. This makes the aircraft effectively uncontrollable in pitch. Option A (speed reduction) is not the primary concern. Option B (nose-down moment) is backwards -- an aft CG creates a nose-up tendency, not nose-down. Option C (structural limits) relates to loading, not CG position. ### Q41: What effect does ice accumulation on the wings have? ^t70q41 - A) It reduces friction drag - B) It improves slow-flight performance - C) It lowers the stall speed - D) It raises the stall speed **Correct: D)** > **Explanation:** Ice accumulation on the wings disrupts the smooth aerofoil shape, increasing surface roughness and altering the lift distribution. This reduces the maximum lift coefficient the wing can produce, meaning the wing must fly faster to generate sufficient lift, which raises the stall speed. Ice also adds weight and significantly increases drag, further degrading performance. For gliders, even a thin layer of ice can cause dramatic performance loss. Option A is incorrect -- ice increases surface roughness and drag. Option B is wrong because slow-flight performance worsens severely. Option C is the opposite of what happens. ### Q42: The landing gear extends but will not lock despite several attempts. How should the landing be performed? ^t70q42 - A) Retract the gear and perform a belly landing at increased speed - B) Keep the gear extended but unlocked and land normally - C) Retract the gear and perform a belly landing at minimum speed - D) Hold the gear handle firmly during a normal landing **Correct: C)** > **Explanation:** An unlocked undercarriage poses the risk of collapsing unpredictably on touchdown, which can cause the glider to veer violently, ground-loop, or nose-over. A controlled belly landing with gear fully retracted at minimum speed provides a predictable, stable deceleration on the fuselage skid. Minimum speed reduces the impact forces and sliding distance. Option A (increased speed) unnecessarily increases the impact energy. Option B (landing on unlocked gear) risks uncontrolled collapse. Option D (holding the handle) provides no guarantee the gear will stay extended under landing loads and distracts the pilot during a critical phase. ### Q43: When flying into heavy snowfall, what is the greatest immediate danger? ^t70q43 - A) Rapid increase in airframe icing - B) Sudden blockage of the pitot-static system - C) Sudden loss of visibility - D) Sudden increase in aircraft mass **Correct: C)** > **Explanation:** Heavy snowfall can reduce visibility from adequate VMC to near-zero almost instantaneously, which is the most immediately dangerous effect for a VFR glider pilot. Without visual references, the pilot cannot maintain spatial orientation, see terrain, obstacles, or other aircraft, and is at immediate risk of controlled flight into terrain or disorientation. Option A (icing) is a concern but develops more gradually. Option B (pitot blockage) affects speed indication but is less immediately life-threatening than total loss of visual reference. Option D (increased mass) is a minor secondary effect. ### Q44: A tailwind off-field landing is unavoidable. How should it be executed? ^t70q44 - A) Approach at increased speed without using spoilers - B) Normal approach, then extend spoilers and push the nose down upon reaching the landing site - C) Approach at reduced speed, expecting shorter flare and ground roll - D) Approach at normal speed, expecting a longer flare and ground roll **Correct: D)** > **Explanation:** In a tailwind landing, the pilot maintains normal indicated airspeed (the stall margin must be preserved regardless of wind direction), but the groundspeed will be higher than normal, resulting in a longer flare distance and significantly longer ground roll. The pilot must select a field long enough to accommodate this. Option A (increased speed, no spoilers) worsens the situation by adding even more groundspeed. Option B (late spoiler deployment) does not allow proper glidepath management. Option C (reduced speed) dangerously reduces the margin above stall and is incorrect -- a tailwind increases, not decreases, the ground roll distance. ### Q45: When landing with a tailwind, what must the pilot do? ^t70q45 - A) Retract the landing gear to shorten the ground roll - B) Increase the approach speed - C) Approach at normal speed with a shallow angle - D) Compensate for the tailwind by sideslipping **Correct: C)** > **Explanation:** With a tailwind, the approach should be flown at normal indicated airspeed, but the approach angle relative to the ground will appear shallower because the higher groundspeed means the glider covers more ground per unit of altitude lost. The pilot must recognise this flatter trajectory and plan for the longer ground roll. Option A (retracting gear) removes braking capability and is dangerous. Option B (increasing speed) adds even more groundspeed and worsens the landing distance problem. Option D (sideslip) does not effectively compensate for a tailwind -- it increases drag and sink rate but does not reduce groundspeed. ### Q46: Tower reports: "Wind 15 knots, gusts 25 knots." How should the approach and landing be conducted? ^t70q46 - A) Approach at increased speed, but avoid using spoilers - B) Approach at normal speed, controlling speed with spoilers - C) Approach at minimum speed, making gentle control corrections - D) Approach at increased speed with firm control inputs to correct attitude changes **Correct: D)** > **Explanation:** In gusty conditions (10 kt gust spread between 15 and 25 kt), the pilot should add a gust correction factor to the normal approach speed -- typically half the gust increment (5 kt in this case) -- to maintain an adequate margin above stall when a gust temporarily drops away and airspeed decreases. Firm, positive control inputs are needed to promptly correct the rapid attitude changes caused by gusts. Option A avoids spoilers, which are essential for glidepath control. Option B uses normal speed, leaving insufficient margin for gust-induced speed loss. Option C (minimum speed) is dangerous because any gust dropout could cause an immediate stall. ### Q47: A glider pilot encounters strong sink while ridge soaring. What is the recommended action? ^t70q47 - A) Increase speed and head away from the ridge - B) Continue flying, as mountain downdrafts are typically brief - C) Increase speed and move closer to the ridge - D) Increase speed and land parallel to the ridge **Correct: A)** > **Explanation:** Strong sink while ridge soaring indicates the pilot has entered the lee-side downdraft zone where descending air can exceed the glider's maximum sink rate, trapping it in a downward flow near terrain. The immediate response is to increase speed to best penetration speed and head away from the ridge toward the valley or upwind side, where conditions are safer and landing options exist. Option B is dangerously complacent -- mountain downdrafts can be sustained and powerful. Option C (closer to the ridge) increases terrain collision risk. Option D (landing parallel to the ridge) may not be feasible on steep terrain. ### Q48: A glider flying beneath an expanding cumulus that is developing into a thunderstorm rapidly approaches cloud base. What should the pilot do? ^t70q48 - A) Slow to minimum speed and exit the thermal area in a gentle turn - B) Tighten harness and be prepared for severe gusts while continuing to thermal - C) Enter the thunderstorm cloud and continue using instruments - D) Deploy spoilers within speed limits and leave the thermal area at maximum permissible speed **Correct: D)** > **Explanation:** A cumulus developing into a cumulonimbus produces extreme updrafts that can suck a glider into the cloud involuntarily, where severe turbulence, icing, lightning, and loss of visual orientation create life-threatening conditions. The pilot must immediately open spoilers and accelerate to maximum permissible speed (VNE) to maximise descent rate and escape the lifting area as quickly as possible. Option A (slowing down) reduces the ability to escape and increases the risk of being drawn into the cloud. Option B (continuing to thermal) invites disaster. Option C (entering the cloud) is potentially fatal in a glider without full instrument capability. ### Q49: After landing, you discover that a pen may have fallen into the cockpit. What must be considered? ^t70q49 - A) Other pilots due to fly the glider should be informed about the missing pen - B) A flight without a writing instrument on board is not permitted - C) Small, light loose items in the fuselage can be regarded as uncritical - D) The cockpit must be thoroughly checked for loose objects before the next flight **Correct: D)** > **Explanation:** Any loose object in a glider cockpit is a potential flight safety hazard because it can slide into the control linkage area and jam the rudder pedals, control column, or trim mechanism, preventing the pilot from controlling the aircraft. A pen lodged under a rudder pedal can prevent full deflection at a critical moment. Before the next flight, the cockpit must be thoroughly searched and the object found and removed. Option A (informing others) is insufficient -- the object must be found. Option B is irrelevant to flight safety. Option C is dangerously wrong -- even small items can jam critical controls. ### Q50: Flying near the aerodrome at about 250 m AGL, you encounter strong sink and decide on a safety landing. At what speed should you fly toward the airfield? ^t70q50 - A) Maximum manoeuvring speed VA - B) Best glide speed - C) Minimum sink rate speed - D) Best glide speed plus allowances for downdrafts and wind **Correct: D)** > **Explanation:** When trying to reach the airfield through strong sink at low altitude, the pilot should fly at best glide speed (which maximises distance per unit of altitude lost) plus additional speed to compensate for the sinking air and any headwind. The speed increment accounts for the fact that the sink reduces the effective glide ratio, and additional speed improves penetration through the descending air mass. Option A (VA) is higher than necessary and wastes altitude. Option B (best glide speed alone) does not account for the adverse conditions. Option C (minimum sink speed) maximises time aloft but minimises ground coverage, which is the wrong priority when trying to reach a specific point. ### Q51: You have just passed the LAPL(S) practical exam. May you carry passengers as soon as the licence is issued? ^t70q51 - A) Yes, provided the recent experience requirements are fulfilled. - B) No, only after completing 10 flight hours or 30 flights as PIC following licence issue. - C) Yes, without any restriction. - D) No, carrying passengers requires an SPL licence. **Correct: B)** > **Explanation:** Under EASA regulation FCL.135.S, a newly issued LAPL(S) holder must complete at least 10 hours of flight time or 30 flights as pilot-in-command on sailplanes after licence issue before carrying passengers. This consolidation requirement ensures the pilot gains sufficient solo experience before taking responsibility for another person's safety. Option A is incorrect because recent experience alone is not sufficient -- the post-licence minimum must also be met. Option C is wrong because the restriction clearly exists. Option D is incorrect because the LAPL(S) does permit passenger carrying after the experience requirement is fulfilled. ### Q52: On final approach to an out-landing field, you suddenly encounter a strong thermal. How should you react? ^t70q52 - A) Retract the airbrakes and slow down to minimum sink speed to exploit the thermal. - B) Fully extend the airbrakes and lengthen the approach path if necessary. - C) Continue the approach unchanged, since a thermal is always followed by a downdraft. - D) Retract the airbrakes and circle gently to exit the thermal. **Correct: B)** > **Explanation:** On final approach to an out-landing field, the pilot is committed to landing and should not attempt to exploit a thermal at low altitude. A strong thermal will lift the glider above the intended approach path, potentially causing an overshoot. The correct response is to fully extend the airbrakes to increase sink rate and maintain control of the approach, extending the approach path if necessary to arrive at the correct height over the threshold. Option A (retracting airbrakes and thermalling) is extremely dangerous at low altitude. Option C is incorrect because approach management must be active. Option D (circling on final) wastes altitude and risks losing the field. ### Q53: You land on a grass runway shortly after a rain shower. What should you expect? ^t70q53 - A) The glider will veer off the runway due to aquaplaning. - B) The glider will brake rapidly on the wet surface without needing the wheel brake. - C) The glider will stop noticeably more quickly after touchdown. - D) Reduced wheel grip and less effective braking, resulting in a longer ground roll. **Correct: D)** > **Explanation:** A wet grass surface significantly reduces the friction between the glider's wheel and the ground, making braking less effective and extending the ground roll distance. The pilot must anticipate this reduced braking performance and ensure the available runway length is sufficient. Using the wheel brake aggressively on wet grass can also cause the wheel to lock and the glider to skid. Option A (aquaplaning) is more of a concern on hard paved surfaces at high speed than on grass. Options B and C are the opposite of reality -- wet grass decreases, not increases, braking effectiveness. ### Q54: When flying late in the day in a valley toward shaded slopes, what difficulty should you expect? ^t70q54 - A) Severe turbulence. - B) Strong downdrafts. - C) Difficulty detecting other aircraft in the shaded areas. - D) Glare from the low sun on the horizon. **Correct: C)** > **Explanation:** Late in the day, when sunlit and shaded areas alternate across a valley, the contrast makes it extremely difficult to detect other aircraft against the dark background of shaded slopes. Aircraft that would be clearly visible against a sunlit hillside become nearly invisible in shadow, significantly increasing the risk of mid-air collision. This visual detection challenge demands heightened vigilance and predictable flight paths in valley flying. Option A (severe turbulence) and Option B (strong downdrafts) are not specifically linked to shading. Option D (sun glare) is a different visibility issue unrelated to shaded slopes. ### Q55: On a cross-country flight with no thermals available, you decide to make an out-landing. Several fields look suitable. By what altitude must your final choice be made? ^t70q55 - A) When you can positively identify the wind direction. - B) Glider at 300 m AGL; motorglider at 400 m AGL. - C) Glider at 400 m AGL; motorglider at 300 m AGL. - D) Glider at 300 m AGL; motorglider at 200 m AGL. **Correct: B)** > **Explanation:** The field selection must be finalised no later than 300 m AGL for a pure glider, leaving sufficient altitude to fly a proper circuit pattern and approach. For a motor glider, the decision altitude is 400 m AGL because the pilot needs additional height to manage engine start procedures and has the added complexity of the power unit. Below these altitudes, the pilot should be committed to the chosen field and flying the circuit. Option A does not specify a concrete altitude. Option C reverses the values. Option D sets the motor glider limit too low at 200 m AGL. ### Q56: You are thermalling at 1500 m AGL over flat terrain with no other glider nearby. In which direction should you circle? ^t70q56 - A) Circle to the left. - B) There is no rule governing the direction. - C) Within 5 km of an aerodrome turn left; otherwise choose freely. - D) Use figure-eight patterns to best exploit the thermal. **Correct: B)** > **Explanation:** When thermalling alone with no other gliders in the thermal, there is no regulation or convention dictating which direction to circle. The pilot is free to choose whichever direction best centres the thermal or feels most comfortable. The rule to conform to a set direction applies only when another aircraft is already established in the thermal -- in that case, the newcomer must adopt the direction of the first aircraft. Option A imposes an unnecessary restriction. Option C cites a nonexistent proximity rule. Option D (figure eights) is not an efficient thermalling technique. ### Q57: You are on an aerotow departure in calm conditions. The towrope breaks just below safety height. What do you do? ^t70q57 - A) Extend airbrakes, push the stick forward, and land straight ahead. - B) Push the stick forward, release the rope (twice), and land in the opposite direction. - C) Establish a glide, release the rope (twice), and land straight ahead if possible. - D) Immediately release the rope once, then establish a glide and land straight ahead. **Correct: C)** > **Explanation:** After a towrope break below safety height in calm conditions, the pilot should first establish a stable gliding attitude to maintain safe airspeed, then release the remaining cable by pulling the release twice (to ensure complete separation). With insufficient altitude for a turn in calm conditions, the pilot should land straight ahead if possible, using the available field ahead. Option A deploys airbrakes immediately, which may be premature before assessing the situation. Option B attempts a 180-degree turn below safety height, which is extremely dangerous without wind assistance. Option D releases only once, which may not ensure complete cable separation. ### Q58: You are ready to launch in a glider with a strong crosswind from the right. What do you do? ^t70q58 - A) Hold the wheel brake until the engine reaches full power. - B) During the ground roll, pull the stick fully back to lift off as quickly as possible. - C) Ask the ground helper to hold the right wing slightly lower during the take-off run. - D) Ask the ground helper to run alongside the glider until you have enough speed to control bank. **Correct: C)** > **Explanation:** With a strong crosswind from the right, the upwind (right) wing tends to be lifted by the wind, which could cause the glider to roll left and dig the left wingtip into the ground. By having the ground helper hold the right wing slightly lower at the start of the ground roll, this tendency is counteracted until the glider reaches sufficient speed for the ailerons to become effective. Option A refers to engine power, which is irrelevant for a glider. Option B (pulling back fully) risks a premature, uncontrolled lift-off in the crosswind. Option D (running alongside) is impractical beyond the first few metres and does not address the specific wing-lifting problem. ### Q59: During an aerotow departure, acceleration is clearly insufficient. What should you do when the take-off abort point is reached? ^t70q59 - A) Push the stick slightly forward to reduce drag. - B) Release the towrope. - C) Pull the elevator quickly to get the glider airborne. - D) Extend the flaps. **Correct: B)** > **Explanation:** If the tug-and-glider combination is not accelerating adequately and the pre-determined abort point is reached without sufficient speed, the only correct action is to release the towrope immediately. Continuing a take-off with insufficient speed risks an uncontrolled stall shortly after lift-off or running off the end of the runway. Option A (reducing drag) will not solve a fundamental acceleration problem. Option C (pulling to get airborne) forces the glider into the air below safe flying speed, risking an immediate stall. Option D (extending flaps) may increase lift but does not address the root cause of insufficient acceleration. ### Q60: What lateral clearance from a slope must be maintained when flying a glider? ^t70q60 - A) A sufficient lateral safety distance. - B) At least 60 m horizontally. - C) At least 150 m horizontally. - D) It depends on the thermal conditions. **Correct: B)** > **Explanation:** Regulations for ridge soaring specify a minimum lateral clearance of 60 metres from the slope. This safety margin provides reaction time if the pilot encounters sudden sink, turbulence, or a wind shift near the terrain, and prevents collision with the slope surface. Option A is too vague and does not specify a concrete value. Option C (150 m) overstates the regulatory minimum, though greater clearance is always prudent in adverse conditions. Option D incorrectly suggests the clearance is variable based on thermal activity rather than being a fixed minimum requirement.