Apt_dir.gca
File:
This
is
the
G1000
AOPA
airport
directory
file.
It
can
only
be
used
with
GDU
sw
10.00
and
higher.
Terrain.adb
File:
This
is
the
airport
terrain
database
file
and
is
included
in
the
terrain
database
download
(30AS
and
9AS).
(
)
Terrain.odb
File:
This
is
the
obstacle
database.
Terrain.tbd
or
Terrain_9as.tdb
File:
Thi i th
ld id t
i d t b
fil
d i i l d d i th t
i d t b
This
is
the
worldwide
terrain
database
file
and
is
included
in
the
terrain
database
download.
Terrain.tbd
is
the
30AS
database
and
Terrain_9as.tdb
is
the
9AS
database.
There
should
only
be
one
of
these
files
on
the
card,
not
both.
If
you
see
both,
then
that
indicates
the
wrong
one
was
downloaded
from
fly.garmin.com
.
9