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Dotted Green Arc  
User currently offlineModesto2 From United States of America, joined Jul 2000, 2768 posts, RR: 6
Posted (12 years 11 months 1 day 11 hours ago) and read 1418 times:

After looking at some in-flight cockpit photos of the 744, I've noticed a dotted green arc that spans the ND. What is it? Thanks.

6 replies: All unread, jump to last
 
User currently offlineJT-8D From United States of America, joined Dec 2000, 423 posts, RR: 3
Reply 1, posted (12 years 11 months 1 day 11 hours ago) and read 1372 times:

Not sure what ND is, but if its like a vsi, the green arc is the tcas ra(resolution advisory). Should be a red arc also, which tells them where not to go..JT

User currently offlineAAR90 From United States of America, joined Jan 2000, 3451 posts, RR: 47
Reply 2, posted (12 years 11 months 1 day 7 hours ago) and read 1346 times:

ND = Navigation Display.
I've never seen a "dotted green arc." However, a dashed-line green arc can be drawn by inserting a distance from a point on the FMC's Fix page. The result is a circle around the fix at the prescribed distance. Zoom in with the fix not at the center of the ND and it can easily be viewed as an arc. Commonly used to show altitude restrictions based upon a distance during approach or departures.



*NO CARRIER* -- A Naval Aviator's worst nightmare!
User currently offlineCdfmxtech From United States of America, joined Jul 2000, 1338 posts, RR: 27
Reply 3, posted (12 years 11 months 12 hours ago) and read 1323 times:

I think AAR90 hit on this already. There is a green arc which is solid, not dotted that shows the point that the aircraft will capture the selected altitude.

User currently offlineModesto2 From United States of America, joined Jul 2000, 2768 posts, RR: 6
Reply 4, posted (12 years 11 months 10 hours ago) and read 1312 times:

Look at the ND, you can see the green arc.


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Photo © Craig Murray



User currently offlineAirplay From , joined Dec 1969, posts, RR:
Reply 5, posted (12 years 11 months 6 hours ago) and read 1298 times:

Oh!

THAT green arc.

 Smile

That segmented green line represents a boundary of a terminal area or other such navigation deliniation. It is part of the MAP display along with the little blue navaid symbols. If the display was "zoomed" out (Range changed) you would probably see a full circle or occasionally some other complex shape representative of the area boundary that it represents.



User currently offlineJT-8D From United States of America, joined Dec 2000, 423 posts, RR: 3
Reply 6, posted (12 years 10 months 4 weeks 1 day ago) and read 1277 times:

Definition problem--lol. We call that the ehsi, or just hsi..JT

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