Hello, Guys!Is Auto Throttle part of Auto Pilot? Or Separate? If we turn off the auto pilot and turn off altitude and speed button too but don't turn off auto throttle then would auto throttle work separately?Second if we turn of speed and altitude button of autopilot but don't turn off Auto Pilot but do full flaps of a plane then would plane come down while landing with auto pilot on? (For example I have seen that a we turn off the AP and make Flaps full and air plane comes down on runway slowly.Please don't angry I'm learning aviation.Regards,

You have to mention what airplane you are talking about here as there are so many with so many different systems.as to your second part, an airplane has to be in approach mode for any auto landing to take place.

The auto throttle is separate from the auto pilot.What you really need to do like many of the other members told you is start out learning to fly with the Cessna 172. And use the help center and the beginner flight lessons. All of the default aircraft functions and systems are fully explained in the help center. It will make life alot more easier for you when transitioning to larger aircraft.

If the aircraft is suitably equipped with an autoland capability (and not all of them are), where the aircraft's systems can detect the altitude above the runway surface and instigate an automatic flare, and providing the crew is qualified to make such an approach, then an autoland can occur even if the autothrottle is disengaged and the pilots are controlling the throttle themselves.It would need the altitude and heading modes of the aircraft to be correctly set, the navigation radios would have to be properly tuned to the ILS frequency in order to capture the ILS localiser and glide slope. The course and altimeter pressure bugs would have to be correctly set, with the autopilot in the correct approach mode and you would most likely need a functioning radar or doppler beam altimeter for the last segment of the automatic flare. You would typically be using two or more autopilot systems to ensure an additional safety margin, although on simpler FS aircraft, some of this stuff is not necessary.Some aircraft can perform the roll out and braking after touchdown automatically, and some cannot, so even on an autoland it is often the case that the pilots have to then perform the last bits manually. Commercial airline crews also need to be qualified on performing such approaches in order to be legally able to make them, and this is not always the case, even among otherwise current airline pilots.Al

Yes, they are seperate. Turning off the AP does not turn off the AT.The slower a plane goes, the more flaps are needed to keep from stalling. Small aircraft have 1 or 2 flap settings and large ones about 6. If you are on a APP landing, add flaps as you reduce speed. Over the fence in a 737, 150 knots, full flaps, turn off AT and mach power as before. Turn off APP, close throttles, flare and land.Have funDave