Learn how to manage engine power on approach, balance pitch and thrust, correct high or low paths, time the flare and know when to go around.
Manage engine power on approach by first setting the aircraft’s published target speed and configuration, then making small, early power changes to correct the flight path while co-ordinating pitch and trim. Hold a steady baseline setting, allow each correction to take effect, and go around if the approach cannot be stabilised before the applicable gate.
In Aviation & Real-World Flying, there is no universal throttle percentage or power value for final approach. Weight, wind, flap and gear position, propeller type, engine response and the required descent angle all change the setting. The aircraft flight manual, pilot’s operating handbook or operator procedure remains the primary reference.
What power setting should I use on final approach?
Use the approximate power setting published or taught for that aircraft, then adjust it to produce the required speed and flight path under the actual conditions.
A memorised throttle position is only a starting point. Light piston aircraft may reference RPM; constant-speed propeller aircraft commonly use manifold pressure and RPM; turboprops often reference torque; and jets may use N1 or EPR. Do not transfer a numerical setting from one aircraft type to another.
Once configured and established, the correct power is simply the setting that maintains the target performance without continual large corrections. A jet normally needs some thrust on final so that its engines remain responsive. Prolonged idle thrust can indicate excess energy, late configuration or an approach that is becoming difficult to stabilise.
How do I control approach power without chasing the speed?
Establish a baseline setting, monitor trends rather than single instrument movements, and correct deviations before they become large.
- Brief the target: Know the published approach speed, landing configuration, expected vertical path and stabilisation gate. Our explanation of controlling approach and landing speed covers speed additives and configuration changes in more detail.
- Configure early enough: Anticipate the drag from landing gear and flap. Add the power needed to prevent the aeroplane dropping below the intended path while speed settles.
- Establish a baseline: Once on speed and on path, hold a steady power setting and trim away sustained control pressure. Do not trim while the aircraft is still accelerating or decelerating.
- Scan the trend: Cross-check airspeed, vertical speed, vertical guidance and the runway picture. On a three-degree path, groundspeed multiplied by roughly five gives a useful descent-rate estimate in feet per minute.
- Make one co-ordinated correction: Move the throttle or thrust lever deliberately, then adjust pitch as needed to preserve speed and path. Turbine engines may take several seconds to respond, so anticipate rather than waiting for a large deviation.
- Remove the correction: As the unwanted trend stops, blend power back towards the baseline. Leaving corrective power applied too long merely creates an error in the opposite direction.
- Reassess stability: If speed, path or power still requires large or repeated inputs near the gate, go around rather than forcing the landing.
Pitch and power are coupled: both affect speed and flight path. The familiar idea that pitch controls one and power controls the other is a useful teaching aid, not a physical separation. Use them together and confirm the result on the instruments and outside view, including how the runway aiming point should appear.
What power correction fixes a high, low, fast or slow approach?
Choose the correction from both the flight-path error and the speed error; reacting to only one indication can make the other worse.
| Condition | Typical co-ordinated correction | Common mistake |
|---|---|---|
| Low, speed correct | Add power and adjust pitch enough to keep the target speed while returning smoothly to the path. | Raising the nose without power, causing further speed loss. |
| High, speed correct | Reduce power modestly and re-establish the path without diving. | Closing the throttle abruptly, then adding it back after sinking below the path. |
| On path, slow | Add power and reduce angle of attack as needed to recover speed without ballooning. | Adding power while holding excessive nose-up pitch. |
| On path, fast | Reduce power and adjust pitch to remain on the path as speed decreases. | Pulling up and converting excess speed into excess height. |
| High and fast, or low and slow | Use a prompt, co-ordinated correction if sufficient height remains; otherwise go around. | Attempting to salvage an unstable approach close to the runway. |
How should power change in gusts and crosswinds?
Power should respond to sustained changes in energy or flight path, not every flicker of the airspeed indicator.
Use only the gust correction specified by the aircraft or operator, maintain the intended average path, and adjust power when a trend persists. A crosswind itself does not justify an arbitrary speed increase, although a sideslip or changing wind may alter drag and the power required. Our guide to co-ordinating power and controls in a crosswind explains the control inputs.
A sudden loss of airspeed, rapidly changing vertical speed, windshear warning or inability to hold the path calls for decisive action. Do not try to solve significant windshear with a series of tiny throttle movements; follow the aircraft’s windshear or go-around procedure.
Why does the aircraft oscillate after each power change?
Approach oscillations usually come from corrections that are too large, too frequent or left in place after the original deviation has stopped.
- Chasing indications: The pilot reacts to each airspeed fluctuation before the previous input has taken effect.
- Ignoring engine lag: A second thrust increase is made while a turbine engine is still spooling up.
- Trimming too soon: The aircraft is trimmed during a temporary correction and must then be retrimmed in the opposite direction.
- Configuring late: Gear or flap changes introduce large drag changes close to the runway.
- Using power alone: Thrust is changed without the pitch input needed to control speed and angle of attack.
The cure is to configure earlier, make smaller corrections and pause long enough to identify the resulting trend. Once stable, return towards the known baseline instead of continually searching for a new setting.
When should power be reduced to idle for landing?
Reduce power according to the aircraft’s landing procedure as the flare develops, not at an arbitrary distance from the runway.
In many light piston trainers, power is reduced smoothly towards idle while transitioning into the flare. Closing it too early increases sink rate; carrying excessive power causes floating and consumes runway. Jets require type-specific retard timing, and autothrottle or autothrust behaviour differs between aircraft, so do not borrow another type’s callout or technique.
Power management produces a stable arrival at the flare; it cannot compensate for a late, abrupt round-out. See our guidance on turning a stable final into a smoother touchdown for the next part of the landing.
When should an unstable approach become a go-around?
Go around whenever the aircraft is not in landing configuration, on the required path, within the permitted speed range and using a suitable power setting by the applicable stabilisation gate.
Many operations use 1,000 feet above aerodrome level in instrument conditions and 500 feet in visual conditions, while some flying schools use a single 500-foot gate. These are common examples rather than universal rules; follow the limits set by the aircraft operator or instructor.
Excessive descent rate, repeated large power changes, an unresolved high-and-fast or low-and-slow condition, unsafe wind effects, or loss of runway alignment are all reasons to discontinue the approach. A go-around is the normal response to an approach that no longer meets the landing criteria.