Normal Takeoff and Climb

• Rotate and lift off at the recommended airspeed, then accelerate to VY
• Hold the manufacturer's recommended speed or VY ±5 knots in the initial climb (CA.IV.A.S11)
• Maintain VY ±5 knots to a safe maneuvering altitude (CA.IV.A.S13)

That ±5 is the whole commercial delta on this task — private allowed +10/−5. There is no longer a free 10 knots of fast, so the pitch attitude has to be right the first time and re-trimmed, not chased.

A 5-knot deviation from the recommended climb speed can produce a significant reduction in climb performance in some airplanes (AFH ch. 6). The tolerance is not arbitrary precision — it is the band inside which the book climb numbers you used for your takeoff-and-departure planning are actually valid.

• VX — greatest gain in altitude for a given distance over the ground (best angle)
• VY — greatest gain in altitude per unit of time (best rate); usually slightly higher than VX (AFH ch. 6)

On a normal takeoff there is no obstacle, so you accelerate to and hold VY (CA.IV.A.S9, S13). VX is the short-field/obstacle tool — see Task IV.E.

Pick a point along the runway by which the airplane must be airborne; if you reach it and you are not flying, the takeoff is discontinued (AFH ch. 6). A good runway-length sanity check: the POH ground-roll takeoff distance plus the landing ground-roll distance added together approximates the runway needed to accelerate and then stop.

Executing it: throttle to idle, maximum braking, maintain directional control. For a fire, mixture to idle cutoff and magnetos off — but always follow the manufacturer's emergency procedure.

At a climb attitude without power the airplane is at or near stalling angle of attack, and you are probably still holding right rudder. So:

1. Lower the nose immediately to prevent a stall, and coordinate with rudder.
2. Establish a controlled glide toward a plausible landing area, preferably straight ahead.
3. Do not attempt a turn back to the runway unless you have specifically trained for the emergency turn-back and have sufficient altitude (AFH ch. 6).

Brief the departure-path options — direction of any emergency turn, wind, terrain — before takeoff, not during.

Vortices are strongest when the generating aircraft is heavy, clean, and slow (PHAK ch. 5). Departing behind one:

• Rotate prior to the point at which the preceding aircraft rotated, and climb above its flight path
• Avoid following on a similar flight path within 1,000 feet of altitude
• Vortices drift with the wind — a 10-knot wind moves them about 1,000 feet in a minute
• If you are unsure of the other aircraft's rotation point, roughly 3 minutes provides a margin for dissipation

A tailwind lengthens the ground roll and flattens the climb gradient, so runway selection is a performance decision, not a convenience one — the POH takeoff chart, run at density altitude (not field elevation), is the only honest arbiter. High density altitude reduces engine and propeller performance, lengthens the takeoff roll, and degrades climb (AFH ch. 6). Commercially, "the runway pointed at where I want to go" is exactly the reasoning the examiner is probing.

On departure, the dangerous shear direction is a headwind decreasing or shifting to a tailwind — the reverse of the landing case — which costs you airspeed and climb performance right when you have the least of both. Windshear itself is a sudden, drastic change in wind speed and/or direction over a very small area, commonly associated with passing frontal systems, thunderstorms, temperature inversions, and strong upper-level winds greater than 25 knots (PHAK ch. 12).

The severe case is a microburst — typically 1–2 miles across, about 1,000 feet deep, lasting 5–15 minutes, with downdrafts to 6,000 fpm. No light single out-climbs that. The mitigation is entirely on the ground: read the PIREPs and the LLWAS/terminal shear alerts, look for the visual clues (an intense rain shaft, or virga with a ring of blowing dust), and delay the takeoff. See Task IV.B for the approach-side encounter.

The ACS lists distractions, task prioritization, loss of situational awareness, or disorientation as a discrete risk element on this Task, and the takeoff roll is where they are least affordable — you are low, slow, accelerating, and holding right rudder. Your mitigations:

• Sterile cockpit from the run-up through a safe maneuvering altitude — no passenger briefing, no chart folding, no frequency shopping
• Aviate, navigate, communicate. A radio call you owe ATC never outranks the airplane; if the tower calls during rotation, fly first and answer second
• Configure and brief before you line up, so the roll itself needs no decisions (see RAPID below)
• Recognize the trap in an abnormal indication after rotation — a gear light or a door popping is exactly the distraction that has flown airplanes into terrain. Climb to a safe altitude, then troubleshoot

Before type certification an airplane is flight tested to show it is satisfactorily controllable, with no exceptional degree of skill, in a 90° crosswind up to 0.2 VSO — two-tenths of the power-off landing-configuration stalling speed. The demonstrated value is placarded in airplanes certificated after May 3, 1962 (AFH ch. 9). It is a demonstrated value, not a certificated limit — but as a commercial pilot carrying people or property, treating it as your personal limit is the defensible answer.

• Complete the run-up and pre-takeoff checklist before taxiing onto the runway (AFH ch. 6)
• Verify the assigned/correct runway — compare heading indicator to the runway number, confirm the hold-short sign, read back the clearance (runway incursion avoidance, CA.IV.A.R7)
• Determine wind direction with or without a wind indicator, and position the flight controls for the existing wind (aileron into the wind)
• Clear the approach and departure paths, align on the centerline
• Advance the throttle smoothly and confirm proper engine and flight instrument indications prior to rotation (CA.IV.A.S7)

It is the reduction of induced drag from interference of the surface with the wingtip vortex, upwash, and downwash pattern. It is detectable up to about one wingspan above the surface (AFH ch. 6):

• At a height of 1/4 the wingspan, induced drag is reduced about 25 percent
• At 1/10 the wingspan, about 50 percent

It is greatest when holding a constant attitude at low airspeed close to the ground — exactly the liftoff and flare regimes.

Leaving ground effect (AFH ch. 6):

• Requires an increase in angle of attack to hold the same lift coefficient
• Produces an increase in induced drag and thrust required
• Produces a pitch-up tendency, with less elevator travel needed, from increased downwash at the tail
• Causes a reduction in static source pressure and a corresponding increase in indicated airspeed

Inside ground effect the local static pressure rise makes the airspeed indicator and altimeter read slightly low and the VSI indicate a descent. That is why a liftoff below the recommended speed feels fine and then quits climbing.

The reduced drag lets it fly before it has real climb performance. Out of ground effect, induced drag and thrust required jump — and at high density altitude, high temperature, or maximum gross weight the airplane may lift off and be unable to climb out or clear obstructions (AFH ch. 6). The only fix once airborne is to reduce drag, which means lowering the nose, which means losing the altitude you have. The real fix is earlier: take off at the speed recommended for adequate initial climb performance, and honor the performance chart at the actual density altitude.

Comply with them where they exist. Noise abatement profiles are published for many airports and reach you through the Chart Supplement, local and regional publications, printed handouts, operator bulletin boards, and the local air traffic facility; some airports post reminder signs at the taxiway hold positions. If you are unfamiliar, ask the tower or air traffic facility for the recommended procedure (AFH ch. 6). Flying commercially into noise-sensitive fields, this is a customer-relations issue as much as a compliance one.