Suicidal Autopilot

[Ijineda]

Following problem: as soon as I activate the Altitude button of any autopilot (be it in a cessna or in a 747), the plane pitches nose down in a suicidal dive which results in a crash if the autopilot is not deactivated. HDG and Speed work fine.

please help me out, it

[Wii]

Have you set the correct altitude for it before you activate it?

[aussiewannabe]

Have you set the correct altitude for it before you activate it?

I'll add to that: Did you also set your rate of climb before activating it?

Since you're flying longhaul, also check to see if your NAV/GPS button is set correctly.

[Ijineda]

yep, everything is set correctly. But I found out why this happened: a button of my joystick got stuck; this button happens to be attributed to "change trim forward". Anyway, I still have no idea why it only starts when the AP-altitude is activated.

[Mazza]

yep, everything is set correctly. But I found out why this happened: a button of my joystick got stuck; this button happens to be attributed to "change trim forward". Anyway, I still have no idea why it only starts when the AP-altitude is activated.

do you have a button for master auto pilot, if so is it near your trim button?

[Ijineda]

yep, everything is set correctly. But I found out why this happened: a button of my joystick got stuck; this button happens to be attributed to "change trim forward". Anyway, I still have no idea why it only starts when the AP-altitude is activated.

do you have a button for master auto pilot, if so is it near your trim button?

Yes I have, it

[Mazza]

yep, everything is set correctly. But I found out why this happened: a button of my joystick got stuck; this button happens to be attributed to "change trim forward". Anyway, I still have no idea why it only starts when the AP-altitude is activated.

do you have a button for master auto pilot, if so is it near your trim button?

Yes I have, it