An Odd Thing on the G1000 Moving Map

[Palmpilot]

Last week I was flying a G1000-equipped rental 182, and I noticed that the moving-map display on the MFD had a magenta line that made a complete circle around San Jose International Airport (SJC), and that in places, it was outside where I was used to seeing the lateral limits of class C airspace for that airport. The display did not show floor-and-ceiling numbers in the areas that I did not remember as class C, but when I moved the cursor to highlight the circular line, then floor-and-ceiling numbers popped up. Has anyone else seen this?

I just checked the current charts on both Skyvector and Foreflight, and they don't show that circle. I'm wondering if maybe the database supplier has started displaying the class C outer area or something like that.

I wish I had thought to take a picture of it.

 

[flyingron]

TFR?

 

[Palmpilot]

I wouldn't expect those to be displayed in magenta.

 

[flyingron]

I think they are supposed to be kind of a purple-red. That's pretty close to magenta.

 

[Palmpilot]

On the screen, the color was identical to what was displayed for the class C boundaries.

 

[Van Johnston]

SJC VOR?

 

[midlifeflyer]

Here's the "naked" SJC Class C. Help any? If not, how about an approximate location? I can try it o the G1000 trainer.

 

[NordicDave]

Dumb idea maybe here.... Might contact one of the CFI's on duty that day from the FBO and see if they saw something?

 

[Palmpilot]

SJC VOR?

I'm not sure what you're asking/suggesting.

 

[Palmpilot]

Here's the "naked" SJC Class C. Help any? If not, how about an approximate location? I can try it o the G1000 trainer.

View attachment 88172

The black circle shown below is an approximation of the location. (The color and line width were indistinguishable from those of the actual class C boundaries.) The plane is equipped with the NXi version of the G1000, so I looked on both the G1000 NXi trainer and the non-NXi version. Neither shows the "extra airspace."

If it's still there the next time I fly that airplane, I'll take a picture. (That won't be for another six weeks or so, because it's an expensive plane to fly.)