Autopilot - Hold Altitude but Not Heading

First time user here but have ran MSFS since 1998. I realize that it isn’t realistic to have the autopilot hold a selected altitude but not hold heading, is there a way to make this happen with in MSFS 2020? In previous versions there was a line of “code” i would add the, if I remember, aircraft.cfg file and it would allow this. Any help or recommendations would be appreciated.

LarryJ2112

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Unless I misunderstand what you’re trying to do.

Set up autopilot to fly to where you want - height, speed, direction, whatever - Turn on AP and Alt bug, do not turn on NAV or HDG and have fun turning the aircraft as you like!

Funny, I had the same question here:

https://forums.flightsimulator.com/t/how-to-navigate-manually-with-autopilot-on-for-altitude/265903

There’s still an aircraft.cfg for some aircraft. If you still remember that ‘hack’?

Even without NAV and HDG, in the c172, if you bank the aircraft and ultimately change your heading, with only ALT hold on, the plane will try to return to it’s original heading with disastrous results sometimes, (the plane almost inverts due to excessive banking) This has been reported.

Ah, I thought I was doing something wrong. Thanks for letting me know it’s another bug in the C172!

Doesn’t matter what plane. Always returns to whatever initial head you turned ALT hold on. Been this way since the beginning.

Nope. Heading will always return. No GA airplanes will allow you to turn while ALT is on.

If am understanding right, I have to do heading adjustments without altitude on. What should the setting for control altitude be, PIT? Then after I have locked a heading, do I set an altitude?

Is that realistic or a bug?

I am consistently getting getting erratic trim ups or swaying violently from side to side without apparent locking on a heading or NAV until crashing without any apparent reason…sometimes after I have been locked in for some time.

I recalibrated my joystick now autopilot works really well! Think joystick was interfering with the ap and making the plane do crazy things!