<s>
Gander	B-General_Concept
Automated	I-General_Concept
Air	I-General_Concept
Traffic	I-General_Concept
System	I-General_Concept
(	O
GAATS	O
)	O
is	O
a	O
proprietary	O
system	O
of	O
Nav	O
Canada	O
used	O
for	O
the	O
oceanic	O
airspace	O
of	O
the	O
Gander	B-General_Concept
Area	I-General_Concept
Control	I-General_Concept
Centre	I-General_Concept
(	O
ACC	O
)	O
.	O
</s>
<s>
GAATS	O
is	O
an	O
oceanic	O
air	B-Application
traffic	I-Application
management	I-Application
system	O
that	O
automatically	O
processes	O
flight	O
data	O
and	O
provides	O
air	B-Application
traffic	I-Application
controllers	O
with	O
a	O
radar-like	O
picture	O
of	O
traffic	O
in	O
oceanic	O
airspace	O
.	O
</s>
<s>
GAATS	O
also	O
provides	O
automatic	O
waypoint	O
reports	O
,	O
and	O
use	O
of	O
Controller	B-Device
Pilot	I-Device
Data	I-Device
Link	I-Device
Communications	I-Device
(	O
CPDLC	B-Device
)	O
which	O
is	O
text-based	O
messaging	O
for	O
such	O
routine	O
requests	O
as	O
altitude	O
changes	O
.	O
</s>
<s>
Nav	O
Canada	O
shares	O
control	O
of	O
this	O
airspace	O
with	O
its	O
United	O
Kingdom	O
counterpart	O
,	O
the	O
National	O
Air	B-Application
Traffic	I-Application
Services	O
(	O
NATS	O
)	O
.	O
</s>
<s>
GAATS	O
traffic	O
management	O
capabilities	O
are	O
achieved	O
through	O
the	O
tight	O
integration	O
between	O
air	B-Application
traffic	I-Application
,	O
airspace	O
and	O
weather	O
models	O
.	O
</s>
