SYNTHETIC VISION off center

woneill

New Member
Joined
Jan 23, 2011
Messages
96
Recently runway center lines have begun to appear perhaps 25' right of aircraft's nose.

What can I do to correct it?
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
Just to clarify: twenty five feet or twenty five degrees?

In either case, I'm guessing sight magnetic heading mis-alignment, which could cause the synvis picture to be turned, which in turn could make the centerline look offset.

Else just GPS signal differences from day to day?

Else someone moved the runway. We're not taking any of the blame though ;)
 

woneill

New Member
Joined
Jan 23, 2011
Messages
96
25 feet.

If it doesn't correct itself due to day-to-day GPS variation how to I realign?

And how can you prove you DIDN'T move the runway?
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
It's possible the the FAA tweaked the data, I suppose. Did the change happen across a database update? Keep in mind we don't do any complex processing of the data from what we get from the US government, except to put it in a Dynon-readable format. If it's wrong in the data, it will be wrong on the screen.

There's no way to change the alignment of the world/data. Remember that even a stellar GPS fix only gets you down to 10s of feet of accuracy.
 
Top