Autopilot failed on take off
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Claiming out of Leeds EGNM and turned on heading and lvl change with A/T on, the AP master1 on.
Turned from 315 left as on Xbox so could not load the current R31 departure NELS4W. So was flying heading and distance/Alt to waypoint.
Then the AP trips off and I get a red ‘AP’ on the display on display above/right on the hsi.
Checked and all AP mods were cleared and auto throttle off.
AP disengage was ok , cycled that but AP1 and AP2 would not light up and was left hand flying . Luckily there was then a power cut 5 min later

So
Any ideas on the AP issue?I cycled heading , LNav, switched AP master on /off on overhead.
Could get modes to light ok but Not AP 1/2 engage.
Not keybindings and sim default X button didn’t toggle like it should
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I just completed my first flight with the RJ 100 in 2024 and faced same issue:
Upon intercepting LOC at CYFB ILS Rwy 34 the autopilot stopped working with the exact same behavior as described above.
I could only continue the approach manually. It was not possible to turn off the AP light including the warning sound until aircraft shutdown.
I have to say that it happened while being on active pause for a short while.