Cliff,
Apologies for hijacking this thread slightly, but in another one I was interested in this transition mechanism.
It looks like the responsible code to monitor GNSS signals and perform the transition is here: https://github.com/modalai/px4-firmware/pull/1/files#diff-4086bdb716e4bb6c6668a2d61f8c87ef3f15caf4c7d7032595c7ec28a4cffdc7R106
Are these changes merged into the official build of v1.11.3-0.2.3 on the ModalAI site at?: https://storage.googleapis.com/modalai_public/flightcore-releases/v1.11.3-0.2.3-modalai_fc-v1_default.px4
I haven't seen the firmware ever "flip" the EKF2 mask, but perhaps there is another parameter I need to set to enable the GNSS quality monitoring. I'll poke around a bit more, just wanted to make sure I was on the right track with the above changeset.
Thanks much for any insight!
Steve