Re: NFDC files (was:gui & Database)

[Gerry Creager N5JXS <gerry cs tamu edu>]

My vote goes to DAFIF.  That's really the core dataset used for all
updates... including Jepps.  They're not likely to go away, as the
data's already out there for most structure-related issues (most
airports don't move) AND DoD has gone to this method of data
distribution and caannot readily go back.  They _could_ lock down the
servers, but I don't see that as likely.

The data dictionaries are well defines and pretty static, and changes
are documented well, so keeping up with the database deltas should be
straightforward.

My $0.02.

Regards,
Gerry
--
John C. Peterson" wrote:
> 
> On Tue, Nov 06, 2001 at 08:19:02PM -0800, Edward A. Falk wrote:
> > > On Tue, Nov 06, 2001 at 04:00:36PM -0500, mike_phillips urscorp com wrote:
> > > > I'll also put together some standalone apps to create the sql database
> > > > from the fplan files. I'm also thinking of using DAFIF to update the nasr
> > >            ^^^^^^^^^^^????????
> > > > information (saves the $36 / 56 days).
> > > Mike,
> > >   Could you elaborate a little on this? The "fplan files" require lots
> > > of fussing around to create, and avdbtools currently supports only the
> > > NASD files.
> >
> > For what it's worth, I wrote some filters that convert NFDC databases
> > (awy.csv, nav.csv, apt.csv, etc.) into fplan databases.  These databases
> > haven't been updated since june, however.
> >
> >       ftp://ftp.tc.faa.gov/nfdc/
> >
>    This project has been down that road before (well avdbtools really).
> >From past experience, I wouldn't want to rely on that stuff. It was
> just so unpredictable in terms of updates. My recollection was that
> there was a period of almost 2 years without any updates, and then
> it disappeared completely for awhile. I'd rather stick with the
> NASD CD-ROM or go with DAFIF. To play devils advocate, the same
> could happen with the DAFIF files...
> 
> John
> 
> --
>  ___|___ | John C. Peterson, KD6EKQ | Try Linux for Intel x86, because
>   -(*)-  | mailto:jcp eskimo com    | a PC is a terrible thing to waste!
>   o/ \o  | San Diego, CA  U.S.A     | See http://www.linux.org/ for info
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--
Gerry Creager -- gerry cs tamu edu
Network Engineering
Academy for Advanced Telecommunications and Learning Technologies		
Texas A&M University	979.458.4020  (Phone) -- 979.847.8578  (Fax)