What does this mean?

[wooden3D]

IMG_3431.PNG

The heading ring is sometimes completely filled, any ideas?

[david.harper]

Purple Ring Around the Heading Indicator / Compass When Pinched

So just now I did a flight from KLAX-KSAN, and when I was on final for rwy 27 at KSAN, this happened…(look above the localizer)[image] This happened all of a sudden, it did not affect my ability to land, but it was a little distracting Version: 16.06.0 (Most recent) OS: IPhone 5S (9.3.3) Aircraft: American A321