Short-Field Takeoff and Maximum Performance Climb (ASEL, AMEL)

To depart safely from a field where the takeoff area is short or restricted by obstructions, by operating the airplane at the maximum limit of its takeoff performance capabilities — which requires positive and precise control of attitude and airspeed so that takeoff and climb performance result in the shortest ground roll and the steepest angle of climb (AFH ch. 6).

Teach it as two separate optimizations that happen in sequence: minimum drag and maximum acceleration on the ground, then maximum climb angle in the air. Students who blur the two produce the classic error — pulling early, which costs both.

Consult and follow the performance section of the AFM/POH for power setting, flap setting, airspeed, and procedures.

• Rotate and lift off at the recommended airspeed and accelerate to the recommended obstacle clearance airspeed or VX, ±5 knots
• Hold that pitch attitude for the obstacle clearance airspeed or VX ±5 knots until the obstacle is cleared or until the airplane is 50 feet above the surface
• Then establish a pitch attitude for VY and accelerate to VY ±5 knots after clearing the obstacle or at 50 feet AGL if simulating an obstacle
• Configure after a positive rate of climb has been verified, per the manufacturer
• Maintain VY ±5 knots to a safe maneuvering altitude, with directional control and wind-drift correction throughout
• Align on the centerline utilizing maximum available takeoff area (S6), apply brakes while setting engine power to achieve maximum performance (S7), and confirm takeoff power prior to brake release (S8)

1. "Flaps set per the POH — set them before we roll so we can devote full attention to the technique."
2. "All the way to the end. Every foot of pavement behind us is a foot we can't use."
3. "Brakes held, power up — confirming takeoff power before we release."
4. "Gauges green. Brakes off."
5. "Nose stays where it is — low drag, let it accelerate."
6. "Approaching VX — back pressure to the VX attitude, firm and smooth."
7. "VX, holding. Wings level. Obstacle ahead."
8. "Clear of the obstacle — lower the nose to VY."
9. "Stabilized at VY — now gear and flaps, in increments."

The ordering matters and is graded: configuration comes after obstacle clearance and VY, not before.

The ACS requires you to apply brakes while setting engine power to achieve maximum performance and to confirm takeoff power prior to brake release (AI.VII.E.S7, S8), so on the checkride you do it.

But know the nuance, because examiners ask: the AFH says some pilots prefer to hold the brakes until maximum obtainable rpm is achieved before allowing the airplane to begin its takeoff run. However, it has not been established that this procedure results in a shorter takeoff run in all light, single-engine airplanes (AFH ch. 6).

Reconcile them the honest way: the ACS wants the power verification before the roll begins, which is a safety and performance check; the AFH declines to claim that the static hold shortens the roll in every airplane. Follow the POH.

Two things, and the second is the dangerous one (AFH ch. 6): an attempt to pull the airplane off prematurely, or to climb too steeply, may cause the airplane to settle back to the runway or make contact with obstacles. Even if the airplane remains airborne, until VX is reached the initial climb will remain flat, which diminishes the pilot's ability to perform the climb and/or clear obstacles.

The physical reason: below VX, lifting off means flying at a high AOA with high induced drag — lift-off before attaining recommended flight airspeed incurs more drag, which requires more power to overcome, and since you are already at maximum power, reducing drag is the only option — and reducing drag means reducing pitch, which means losing altitude (AFH ch. 6).

Coaching in the moment: "Relax the back pressure — let it accelerate to VX first." Debrief on the ground with the ground-effect version: the airplane will feel ready before it is.

Handle it deliberately, because the intuitive fix is wrong. Some airplanes have a natural tendency to lift off well before reaching VX. In these airplanes it may be necessary to allow the airplane to lift off in ground effect and then reduce pitch attitude to level until the airplane accelerates to VX with the wheels just clear of the runway surface (AFH ch. 6).

That method is preferable to forcing the airplane to remain on the ground with forward elevator-control pressure until VX is attained — because holding the airplane on the ground unnecessarily puts excessive pressure on the nose-wheel and may result in wheelbarrowing, and it also hinders both acceleration and overall airplane performance.

So the answer to a student who asks "should I hold it down?" is no: let it fly, level in ground effect, accelerate, then climb.

Ten (AFH ch. 6):

1. Failure to review AFM/POH and performance charts prior to takeoff
2. Failure to adequately clear the area
3. Failure to utilize all available runway/takeoff area
4. Failure to have the airplane properly trimmed prior to takeoff
5. Premature lift-off resulting in high drag
6. Holding the airplane on the ground unnecessarily with excessive forward-elevator pressure
7. Inadequate rotation resulting in excessive speed after lift-off
8. Inability to attain/maintain VX
9. Fixation on the airspeed indicator during initial climb
10. Premature retraction of landing gear and/or wing flaps

Note that 5 and 6 are opposite errors, and 7 is a third. The maneuver is graded on hitting a narrow rotation window, and most students miss it in one of three directions.

Take the instrument away as the primary reference and give them the correct one. The AFH's attitude-flying procedure, taught verbatim (AFH ch. 6):

Make the necessary pitch change with reference to the natural horizon, hold the new attitude momentarily, and then glance at the airspeed indicator to verify. Because of inertia, the airplane does not accelerate or decelerate immediately as pitch is changed — it takes time for airspeed to respond. If the pitch change was over- or under-corrected, the ASI will show a speed higher or lower than desired; repeat the cross-check and pitch-change process until the desired climbing attitude is established.

Then: hold the attitude constant while cross-checking against the horizon and other outside references. The airspeed indicator should be used only as a check to determine if the attitude is correct.

Coaching sentence: "Pick the sight picture, hold it three seconds, then look." And remind them the climb pitch will be lower when heavily loaded or when power is limited by density altitude — the VX picture is not one fixed image.

Everything is briefed before you taxi:

• Performance first. Check the POH performance charts and decide if the airplane is capable of a safe takeoff and climb for the conditions and location — high density altitudes reduce engine and propeller performance, increase takeoff rolls, and decrease climb performance (AFH ch. 6).
• A rejection point. Identify a point along the runway at which the airplane should be airborne; if that point is reached and the airplane is not airborne, take immediate action to discontinue (AFH ch. 6). Reject with power to idle and maximum braking while maintaining directional control; for a fire, mixture to idle cutoff and magnetos off, per the manufacturer's emergency procedure.
• A runway estimate. The POH ground roll distances for takeoff and landing added together give a good estimate of the total runway needed to accelerate and then stop.
• Engine failure after lift-off. At a VX climb attitude without power, the airplane is at or near a stalling AOA while you are holding right rudder — lower the nose immediately and coordinate, glide preferably straight ahead. No turn back unless trained with sufficient altitude.
• Your own limit and the phrase. Take the controls and calmly announce, "I have the flight controls" (AIH ch. 9). A VX climb toward an obstacle is the least forgiving place in the pattern; set the trigger low.

Each one is worse on a maximum-performance takeoff than on a normal one, and that is the teaching point — the short field removes the margin you would normally use to absorb it.

• a. Crosswind — the technique is Task VII.A's: full aileron into the wind at the start of the roll, bled off only as the ailerons become effective, with rudder holding the takeoff path straight (AFH ch. 6). What is new here is the conflict: you are trying to hold minimum drag and a precise rotation speed while holding aileron deflection, and you rotate firmly at the recommended speed rather than letting it fly off. Compare the component against the maximum demonstrated crosswind (90° crosswinds up to 0.2 VSO, placarded in airplanes certificated after May 3, 1962, AFH ch. 9)
• b. Windshear — a sudden, drastic shift in wind speed, direction, or both (AFH glossary). At VX you are already at the least-margin speed in the climb, so a shear that costs airspeed costs the climb angle you are depending on to clear the obstacle. Teach the response as attitude first: hold the pitch, accept the airspeed excursion into the tolerance, and if it will not recover, the obstacle is not clearable
• c. Tailwind — check the POH that the airplane is approved for a takeoff with a tailwind, then understand what it costs twice: a longer ground roll, and climb gradient is reduced with a tailwind component (AFH ch. 13). A short field with an obstacle is a gradient problem, so a tailwind attacks the exact quantity the maneuver optimizes
• d. Wake turbulence — taking off immediately behind another aircraft, particularly a large and heavy transport airplane, creates the risk of a wake turbulence encounter, and a possible loss of control. If it is necessary, avoid the other aircraft's flightpath or rotate prior to the point at which the preceding aircraft rotated (AFH ch. 6). Say the conflict out loud to the student: on a short field you are already using maximum available takeoff area, so rotating early may not be available — which usually means the correct answer is to wait
• e. Takeoff surface/condition — a soft, wet, or contaminated surface lengthens the roll that the POH chart did not account for, and the low-drag, full weight on the main wheels short-field roll is exactly wrong for it. If the surface is soft and short, teach the student that it is Task VII.C technique applied to a field that may simply be too small

The instructor's framing for all five: the short-field takeoff has no reserve. On a normal takeoff each of these consumes margin; here, each one consumes the obstacle clearance itself.

VX is the speed at which the airplane achieves the greatest gain in altitude for a given distance over the ground. It is usually slightly less than VY, which is the greatest gain in altitude per unit of time (AFH ch. 6). An obstacle is a distance problem, so you buy altitude per foot of ground, not per second.

Aerodynamically: VX sits at maximum excess thrust; VY at maximum excess power. That is the level a good instructor can answer down to, and the level a student's "why" usually stops at.

The 50-foot transition is the obstacle assumption: the ACS grades to VX until the obstacle is cleared or until the airplane is 50 feet above the surface, then VY (AI.VII.E.S10, S11). The safety argument for leaving VX promptly is in the AFH's normal-takeoff discussion: flying at VY requires much quicker pilot response in the event of a powerplant failure to preclude a stall — and VX is slower still, so time spent at VX is time spent with the least margin. Also maintain takeoff power until at least 500 feet above the surrounding terrain or obstacles.

Precision matters: in some airplanes a deviation of 5 knots from the recommended speed may result in a significant reduction in climb performance.

Not the drag that matters on a firm surface. On a hard runway, wheel rolling resistance is small; induced drag from a high AOA is not. So the short-field roll wants the lowest-drag attitude: the airplane is allowed to roll with its full weight on the main wheels and accelerate to lift-off speed, and the pilot adjusts pitch attitude and AOA to attain minimum drag and maximum acceleration — which in nose-wheel airplanes involves little use of the elevator control since the airplane is already in a low-drag attitude (AFH ch. 6).

This is the exact inverse of the soft-field roll, where wheel drag dominates and you trade induced drag to escape it. Teaching the two Tasks back to back, with that single sentence of contrast, is the fastest way to make both stick — and it inoculates against the most common conceptual error, which is applying soft-field back pressure on a short firm runway.

Because the airplane is operating at the limit of its performance and any lift lost is altitude lost. The ACS sequences it: configure in accordance with the manufacturer's guidance after a positive rate of climb has been verified (AI.VII.E.S12), and the AFH is stricter still — on short-field takeoffs the landing gear and flaps should remain in takeoff position until the airplane is clear of obstacles (or as recommended by the manufacturer) and VY has been established (AFH ch. 6).

Two reasons, both worth giving a student: lift — it is usually advisable to raise the flaps in increments to avoid sudden loss of lift and settling of the airplane, since a full retraction near the ground at VX is a settling event with an obstacle in front of it; and attention — until all obstacles have been cleared, maintain focus outside the airplane instead of reaching for landing gear or flap controls or looking inside for any reason.

Premature retraction of landing gear and/or wing flaps is a listed common error for exactly this reason. In airplanes that produce high control pressures at maximum power, use caution when reaching for the flap handle — airplane control is the first consideration (AFH ch. 9).

The explanation phase happens on the ground, before the flight — objectives and completion standards, the precise actions the learner will perform, the end result of those efforts, and appropriate safety procedures, ending with an invitation for questions on any step they do not understand (AIH ch. 9).

For this Task specifically, three things belong in the brief and nowhere else, because there is no time for them in the air:

• The numbers: rotation speed, VX, VY, the 50-foot transition, and the ±5-knot tolerance
• The rejection point, chosen by looking at the actual runway
• The exchange-of-controls procedure and the fact that you may use it

Then demonstrate with narration that conforms to the explanation and follows the same sequence — and if the demonstration deviates from what you explained, acknowledge and explain the deviation immediately (AIH ch. 9). A demo where you rotate two knots early and say nothing teaches the student that the numbers are soft.

Debrief with collaborative assessment — the learner self-assesses first, then you compare (AIH ch. 9). Ask "where were you on speed at fifty feet?" before you tell them.