builds the ILS database from several sources and uses an external compiled
utility to crunch the math to straighten out the approaches whenever we can
match them to specific runway headings and threshold locations. This should
be *always* but our runway data is horribly outdated so that needs to be
updated soon to get into sync.
to preserve any non-usa approaches that are missing from the FAA data or
the DAFIFT data (these should be checked against current charts to verify
that these still exist and aren't being incorrectly carried along.)
data. The script is growing though to incorportate other data sources
so the name will probably have to change. DAFIFT is missing many
approaches (for instance it only has 6 approaches from the entirety of
Canada.) This is not yet ready for prime time, I'm simply committing it
to the repository so I can check it out and work on it from multiple
locations.
clearly the date of installation at that particular offset. Offsets are
usually not changed because this would imply moving intersection points,
fixes, changing approaches, and all sorts of cascading effects. GEP near
my house hasn't been adjusted since 1965; it is now about 8 degrees off the
real current magvar.
