This is an old bug that I hoped would be fixed in 1.2.7. The FMA and FCU switches modes between MACH and SPD rapidly for no reason, from time to time. If not every flight, then most of them. See below for a clip of it happening.

https://youtu.be/RDaOhwf5Ifw

To make it easier to see what's happening, here are screenshots of subsequent frames:

It goes to SPEED (complete with SPD in the FCU) with a managed target of 0 kts. At first I thought it might be my physical minicockpit FCU sending this signal, but it happens with that unplugged too.

It would actually be nice if someone else could confirm they have seen this too? So I know for sure it's not my setup.

Edited October 25Oct 25 by Gungnir

3 hours ago, Gungnir said:

This is an old bug that I hoped would be fixed in 1.2.7. The FMA and FCU switches modes between MACH and SPD rapidly for no reason, from time to time. If not every flight, then most of them. See below for a clip of it happening.

https://youtu.be/RDaOhwf5Ifw

To make it easier to see what's happening, here are screenshots of subsequent frames:

It goes to SPEED (complete with SPD in the FCU) with a managed target of 0 kts. At first I thought it might be my physical minicockpit FCU sending this signal, but it happens with that unplugged too.

It would actually be nice if someone else could confirm they have seen this too? So I know for sure it's not my setup.

Yes, I've been experiencing the very same phenomenon almost every time.

Thanks for your report! Will log for the team to review!

Appreciate your patience! 🙂