How do I maintain altitude in a flight simulator?

To maintain altitude in a flight simulator, set a steady power and airspeed, use small pitch inputs to stop the climb or descent, then trim until the aircraft holds that attitude with almost no control pressure. Cross-check the altimeter and vertical-speed indicator, and correct trends early rather than chasing every small movement.

For aviation and real-world flying practice, this technique applies to fixed-wing aircraft. A helicopter is different: collective and power primarily control altitude, while cyclic inputs alter attitude and can require a compensating collective adjustment.

How do I hold altitude manually?

Hold the required flight attitude with the elevator, use power to maintain an appropriate airspeed, and trim only after the aircraft has stabilised.

1. Lead the level-off. Begin reducing the climb or descent before reaching the target altitude. A useful starting rule is to lead by about 10% of the vertical-speed value: at 500 ft/min, start roughly 50 ft early. Fast jets and high rates may require a larger lead.
2. Set the level-flight attitude. Use the outside horizon in visual conditions or the attitude indicator when flying on instruments. Do not wait for the vertical-speed indicator to reach zero before moving the nose; that instrument can lag.
3. Set cruise power. Allow the airspeed to settle while holding the desired altitude. Pitch and power are coupled: changing either one can alter airspeed, lift and the amount of elevator pressure required.
4. Trim away the pressure. Hold the attitude with the yoke or stick, then adjust elevator trim until little or no steady pressure remains. Trim relieves control force; it is not the primary control for correcting altitude.
5. Scan for a trend. Move repeatedly between attitude, altimeter, vertical speed and airspeed. Make a small correction as soon as a definite climb or descent develops.
6. Correct one problem at a time. Change pitch to stop the immediate vertical movement, check airspeed and power, then retrim after the aircraft settles.

The most common mistake we see is trimming while the aircraft is still accelerating. That produces another pitch change moments later. Microsoft Flight Simulator X users can refer to our FSX elevator-trim control guide for simulator-specific adjustment advice.

Which instruments should I use to maintain altitude?

The attitude indicator or outside horizon provides the earliest pitch cue, while the altimeter and vertical-speed indicator confirm whether the aircraft is actually holding altitude.

Set the correct barometric reference as well. An incorrect setting makes the indicated altitude wrong, although it does not by itself cause the aircraft to climb or descend.

How do I use autopilot to maintain altitude?

To maintain altitude with autopilot, stabilise the aircraft first and confirm that ALT is the active pitch mode on the flight-mode annunciator.

1. Stabilise manually. Establish a safe airspeed, modest vertical speed and near-trimmed condition before engaging the autopilot.
2. Set the altitude selector. Enter the altitude you intend to hold or capture. Changing the selected number alone does not command a climb, descent or level-off.
3. Choose the correct pitch mode. ALT normally holds the captured altitude. VS commands a vertical speed, FLC or IAS uses pitch to maintain airspeed, and VNAV follows a calculated vertical path when properly configured.
4. Verify capture. Check the flight-mode annunciator rather than relying on a button light. The display should show altitude capture followed by active altitude hold, with labels varying between aircraft.

ALT hold normally maintains barometric altitude; it does not follow terrain or keep a fixed height above the ground. Do not fight an engaged autopilot with sustained yoke or stick pressure—disconnect it first if manual intervention is required.

Mode names and arming logic vary, so our breakdown of autopilot pitch and altitude logic explains how ALT, VS, FLC and VNAV differ. MSFS 2024 users can follow a worked setup for capturing and holding altitude and speed.

Why does my aircraft keep gaining or losing altitude?

Persistent altitude drift usually comes from poor trim, changing airspeed, oversized control inputs, conflicting controller axes or an autopilot mode that never became active.

• Out of trim: releasing the controls immediately starts a climb or descent. Re-establish the attitude, wait for speed to settle and retrim.
• Changing airspeed: excess power can produce acceleration and a tendency to climb, while insufficient power can lead to deceleration and sinking. Correct the energy state rather than applying continuous elevator pressure.
• Overcontrol: repeated large pitch inputs cause porpoising. Use very small corrections and allow time for the instruments to show the result.
• Controller conflicts: check for duplicate elevator or trim assignments, a noisy axis, inappropriate assistance features or a controller that does not return to neutral. Add only enough dead zone to remove genuine input noise.
• Wrong autopilot mode: a selected altitude is not proof that ALT hold or altitude capture is active. Read the flight-mode annunciator.
• Turbulence: hold a sensible average attitude and airspeed rather than chasing every brief displacement. Constant corrections often make the deviation larger.

If the autopilot repeatedly climbs and descends around the target, use our diagnostic checklist for autopilot altitude hunting; low airspeed, aggressive vertical-speed commands and control conflicts are frequent causes.

How do I maintain altitude during a turn?

Apply slight back pressure as bank increases because part of the wing's lift is redirected sideways, leaving less lift available to oppose weight.

Roll smoothly into the turn, add enough elevator to prevent a descent and increase power if the airspeed starts falling. As you roll level, remove the extra back pressure or the aircraft will climb. The lift requirement rises sharply in steep turns; an ideal coordinated level turn at 60 degrees of bank requires about 2 g and increases stall speed.

For practice, begin in calm conditions with the wings level and autopilot off. Hold a chosen altitude within about 100 feet for two minutes, then repeat with power changes and 20- to 30-degree-bank turns. Treat that as a beginner practice band, not a universal operational tolerance.