Random shut off of automatic flight during cruise

[Blaster254]

Today I took off from EGLL. Initial climb to fl240. Then I literally blinked. Speed nav etc disappeared from primary flight display. The only display at the top was AP1/2. All three other areas were blank. Also heading would not engage. There was no heading indicator on the PFD. Would not capture altitude. Only manual flight was permitted. I tried disengaging and re-engaging auto throttle and autopilot. To no avail. Help

[deadman]

Looks like Flight director got disengaged. Ive noticied this alot with the ini a330. 

[Blaster254]

Yes but wouldn’t reset. Also doesn’t explain the heading select and no heading select indicator on the primary flight display?

[Blaster254]

The answer to my last is yes it does. Apologies I don’t know how I didn’t spot that. Still should not have auto disconnected. Bit embarrassed I didn’t spot that 

[juanchopancho]

I just encountered exact same thing after a crazy wind shift in MSFS2024.

Cruising at .82 at FL370

Then sudden windshift MACH went up to .99

AP didn't like that. Autopilot disconnect alarm.

After that nothing worked. No AP or AT.