<s>
The	O
En	O
Route	O
Automation	O
Modernization	O
(	O
ERAM	B-General_Concept
)	O
system	O
architecture	O
replaces	O
the	O
En	O
Route	O
Host	O
computer	O
system	O
and	O
its	O
backup	O
.	O
</s>
<s>
ERAM	B-General_Concept
provides	O
all	O
of	O
today	O
's	O
functionality	O
and	O
:	O
</s>
<s>
The	O
display	O
system	O
provides	O
real-time	O
electronic	O
aeronautical	O
information	O
and	O
efficient	O
data	B-General_Concept
management	I-General_Concept
.	O
</s>
<s>
Detects	O
and	O
alerts	O
air	B-Application
traffic	I-Application
controllers	I-Application
when	O
aircraft	O
are	O
flying	O
too	O
close	O
together	O
for	O
both	O
safety	O
and	O
long	O
term	O
planning	O
.	O
</s>
<s>
ERAM	B-General_Concept
simultaneously	O
supports	O
many	O
operating	O
modes	O
and	O
complex	O
airspace	O
configurations	O
,	O
driven	O
by	O
thousands	O
of	O
users	O
who	O
want	O
to	O
use	O
the	O
airspace	O
differently	O
.	O
</s>
<s>
The	O
FAA	O
is	O
deploying	O
ERAM	B-General_Concept
at	O
20	O
Air	O
Route	O
Traffic	O
Control	O
Centers	O
(	O
ARTCCs	O
)	O
,	O
the	O
,	O
and	O
the	O
.	O
</s>
<s>
By	O
the	O
end	O
of	O
September	O
2011	O
,	O
ERAM	B-General_Concept
was	O
in	O
continuous	O
use	O
at	O
two	O
relatively	O
low-traffic	O
centers	O
,	O
the	O
Salt	O
Lake	O
City	O
(	O
ZLC	O
)	O
and	O
Seattle	O
(	O
ZSE	O
)	O
ARTCCs	O
.	O
</s>
<s>
As	O
of	O
March	O
2015	O
,	O
the	O
Operational	O
Readiness	O
Decision	O
(	O
ORD	O
)	O
for	O
ERAM	B-General_Concept
has	O
been	O
declared	O
at	O
the	O
Salt	O
Lake	O
City	O
,	O
Seattle	O
,	O
Denver	O
(	O
ZDV	O
)	O
,	O
Minneapolis	O
(	O
ZMP	O
)	O
,	O
Albuquerque	O
(	O
ZAB	O
)	O
,	O
Chicago	O
(	O
)	O
,	O
Los	O
Angeles	O
(	O
ZLA	O
)	O
,	O
Kansas	O
City	O
(	O
ZKC	O
)	O
,	O
Houston	O
(	O
ZHU	O
)	O
,	O
Indianapolis	O
(	O
ZID	O
)	O
,	O
Oakland	O
(	O
ZOA	O
)	O
,	O
Boston	O
(	O
ZBW	O
)	O
,	O
Miami	O
(	O
ZMA	O
)	O
,	O
Cleveland	O
(	O
ZOB	O
)	O
,	O
Fort	O
Worth	O
(	O
ZFW	O
)	O
,	O
Memphis	O
(	O
ZME	O
)	O
,	O
Atlanta	O
(	O
ZTL	O
)	O
,	O
Jacksonville	O
(	O
ZJX	O
)	O
and	O
New	O
York	O
(	O
ZNY	O
)	O
ARTCCs	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
ORD	O
sites	O
,	O
continuous	O
operations	O
have	O
been	O
declared	O
at	O
the	O
Washington	O
(	O
ZDC	O
)	O
ARTCC	O
,	O
meaning	O
all	O
20	O
ARTCCs	O
in	O
the	O
CONUS	O
are	O
now	O
using	O
ERAM	B-General_Concept
24/7	O
to	O
control	O
en	O
route	O
air	O
traffic	O
over	O
an	O
area	O
covering	O
more	O
than	O
3million	O
square	O
miles	O
.	O
</s>
<s>
In	O
April	O
2014	O
,	O
the	O
ERAM	B-General_Concept
system	O
at	O
the	O
Los	O
Angeles	O
ARTCC	O
failed	O
causing	O
a	O
ground-stop	O
that	O
propagated	O
throughout	O
the	O
western	O
United	O
States	O
and	O
lasting	O
as	O
long	O
as	O
2.5	O
hours	O
.	O
</s>
<s>
All	O
ARTCCs	O
operational	O
under	O
ERAM	B-General_Concept
are	O
running	O
with	O
software	O
that	O
includes	O
the	O
NextGen	O
capabilities	O
of	O
Automatic	B-Application
Dependent	I-Application
Surveillance-Broadcast	I-Application
(	O
ADS-B	B-Application
)	O
and	O
System	O
Wide	O
Information	O
Management	O
(	O
SWIM	O
)	O
.	O
</s>
