On Jan 3, 2011, at 2:37 PM, Curtis Olson wrote:

> Hi Peter,
> 
> I can't think of any reason the basic autopilot functionality would be tied 
> to a particular location.  Could you provide a specific aircraft and airport 
> (i.e. command line options) that tickle this bug?  Perhaps it's something 
> with your local build?  Perhaps it's something really obscure that no one 
> else has noticed?
> 
> Thanks,
> 
> Curt.
> 
> 
> On Mon, Jan 3, 2011 at 1:28 PM, Peter Brown wrote:
> >
> > Hey all,
> > I am finding the Generic Autopilot either works as expected, or loads with 
> > unchangeable data, depending on spawn location.
> > I seem to recall some discussion about a location dependent bug, but I 
> > thought it was related to weather. (?)
> >
> > FlightGear v2.0 8/21/2010 snapshot from Tat's site.
> >
> > Any aircraft without a purpose built AP seems to be affected, based on the 
> > number I've tested, but for these locations listed I was using the popular 
> > MD-81 from Gary Neely's website.
> > Airports to the north and to the south are working, where the middle area 
> > is not.
> >
> > Working locations tested:
> > To the south - Kathmandu, Nepal,  San Antonio, TX; Orlando, FL, and Key 
> > West, FL
> > To the north - Rost, Norway; Montreal, QC
> >
> > Non-working locations seem to be anything across the middle third -
> > Burlington, VT (just across the border from Montreal)
> > Atlanta, GA
> > Charles De Gaulle, Paris, France
> > EHAM
> > KSFO
> >
> > What I don't know yet is if this related to latitude/longitude, the airport 
> > itself, or something outside of that. But the data at the moment presents 
> > itself as a lat/lon issue.
> >
> > In a non-working location bad data consists of a default speed in the 
> > 13,000 range, alt hold in the 33,000 range, and headings from 130 - 550 
> > degrees.  These values can not be changed by the user.  Often the headings 
> > and speed values are constantly climbing.
> > A valid working location typically loads with 0 for heading and speed, and 
> > a single digit value for altitude hold.  These are then changeable.
> >
> > Can anyone enlighten me on it?
> >
> > Thank you,
> > Peter Brown
> 
> 
> 
> Does no one have information on the Generic Autopilot only working above or 
> below certain latitudes?
> 
> 
> 
> -- 
> Curtis Olson:
> http://www.atiak.com - http://aem.umn.edu/~uav/
> http://www.flightgear.org - http://www.flightgear.org/blogs/category/curt/
> 
> 

I will put together more information.

Thank you,
Peter
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