On Mon, 21 Jul 2003 16:45:32 +0200
"Frederic Bouvier" <[EMAIL PROTECTED]> wrote:

> Martin Spott wrote:
 
> I think there was already some manual modifications to the default.apt.gz
> file.
> 
> The idea of a distributed database based on XML files spread in a file
> system hierarchy was already discussed, but the needed infrastructure
> needs someone to jump in.

Any such infrastructure has to support automatic update from the Government databases, 
The US DAFIF data is probably the best source, as the data changes over time.  For 
instance official databases take account of: new airports and navaids, Chicago Mayors 
with grudges and other airport closures, continental drift, and magnetic variation 
changes, in the case of DAFIF, every 28 days.
Robin Peel <http://www.x-plane.org/users/robinp/AptNavFAQ.htm>
maintains a database where he merges the 'monthly' DAFIF with manual info supplied by 
X-Planerers (and I guess FlighGearers), and produces a new X-Plane database structure. 
 If we wanted an XML version I would think we should try and convince him to generate 
it from his db. The alternative is for someone to set up that service for FlightGear, 
and maintain it - which looks like a big job.

Richard.

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