X plane aircraft turning left12/27/2023 ![]() Using the SAME ILS in BOTH directions has it's advantage (it's cheaper) but a drawback: The needle deflection on your instruments is BACKWARDS when going the WRONG WAY ON THE ILS! Hit the BC (back coourse) autopilot button if you are doing this. To save money, some airports will NOT bother to install a new ILS at the airport to land on the same runway going the other direction, but instead let you fly this second localizer BACKWARDS to come into the runway from the opposite direction of the regular ILS! This is called a BACK COURSE ILS. THIS IS USED FOR THE MISSED APPROACH, ALLOWING YOU TO CONTINUE FLYING ALONG THE EXTENDED CENTERLINE OF THE RUNWAY, EVEN AFTER PASSING OVER AND BEYOND THE RUNWAY. BC: Every ILS on the planet has a LITTLE-KNOWN SECOND LOCALIZER THAT GOES IN THE OPPOSITE DIRECTION AS THE INBOUND LOCALIZER.VNAV: Vertical Navigation: This will fly the altitude commanded by the FMS if you have an FMS in your airplane.TERR: Terrain Following: This will fly the aircraft at a low altitude, barely clearing the ground.It will fly the localizer and glideslope components of the ILS. APP: Approach: This is simply the combination of the LOC and G/S buttons.G/S: Glideslope: This will fly the glideslope portion of the ILS.This will fly a VOR radial or ILS localizer, or to a GPS destination. FLCH: Flight Level Change: Same as SPD, only if ATHR is on, automatically selects either full or idle power, depending on whether you intend to climb or descend.ATHR: This will hold the pre-selected AIRSPEED by adding or taking away engine thrust. ![]() Commonly used in King-Airs to just hold the nose somewhere until the pilot decides what to do next. ![]() PTCH: Pitch-Sync: Use this to cause the plane to hold its nose at a constant pitch attitude.You control the plane's climb or descent rate indirectly with the throttle. SPD: This will hold the pre-selected AIRSPEED by pitching the nose up or down (leaving throttle alone).HOLD: This will hold the current ALTITUDE by pitching the nose up or down.V/S: This will hold a constant VERTICAL SPEED by pitching the aircraft nose up or down.This will simply follow the heading bug on the HSI or Direction Gyro. When you engage it the plane will hold its current roll angle.) (To be precise, WLV is actually attitude hold. WLV: WING-LEVELER: This will simply hold the wings level while you figure out what to do next.This is the switch position you must set to have the autopilot actually fly the plane. When the flight director switch is in the AUTO position, the autopilot controls the plane. You fly the plane so that the attitude cue is level and centered in the artificial horizon to follow the autopilot course. Instead, it is controlling an attitude cue in your artificial horizon. When the flight director switch is in the ON position, the autopilot is still not controlling the plane. If you have engaged an autopilot mode and it doesn't appear to be working, check the flight director switch! If the plane does not have a flight director switch, engaging any autopilot mode automatically turns it on. If the flight director switch is OFF, your autopilot is OFF and does not fly the plane. The flight director switch, if your aircraft has one, controls the operation of the autopilot. However, the standard heavy metal airliner control set is pretty commonly used, so we'll go with that here. Not only that, but aircraft designers can provide custom graphics, so there's no telling what things will look like. X-Plane offers a lot of flexibility in the autopilot controls and you'll find different configurations on different planes. There is no simple answer to this question. Read the description carefully! If you're used to older X-Plane versions, the Autopilot Problems FAQ page will explain the major differences. Note! X-Plane 8.60 introduced a number of subtle but significant changes in how the autopilot works. ![]() Using the Autopilot - Version 8.60+ Autopilot FAQ The autopilot will use them, and so you have to know their status.Īdditionally, a means of indicating and changing the selected heading (often integrated into the directional gyroscope) and the selected altitude (separate indicator and control) are very useful. PTCH and WLV are also activated by other modes, so it's important to have buttons (which also serve as indicators) for these functions even if you don't plan on using them. The reason for these four controls is that if the autopilot is first activated, pushing ONE button activates TWO autopilot modes:
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