unshuttered PVD
OK, From reading the document, it looks like when it is functioning as intended, the PVD is "unshuttered"
In a more modern glass cockpit, I would make the analogy that the indication would be displayed for view when valid and removed from view when not valid. Kind of like how some Flight Directors are biased out of view when invalid.
For any on the forum who have experience with the PVD, is this a reasonable analogy?
Thanks
Nightdog83