Bush Prepares for Possible GPS Shutdown

http://cnn.netscape.cnn.com/ns/news/...&w=APO&coview=

Chris Gumm wrote:
http://cnn.netscape.cnn.com/ns/news/...&w=APO&coview=


How much would that suck during a GPS approach to minimums far away from the
crisis? Would WAAS stations be shutdown to?

On Thu, 16 Dec 2004 15:08:26 -0500, "Schmoe"
wrote:

Chris Gumm wrote:
http://cnn.netscape.cnn.com/ns/news/...&w=APO&coview=


How much would that suck during a GPS approach to minimums far away from the
crisis? Would WAAS stations be shutdown to?


I'd say it'd depend on what the crisis was perceived to be, and I
doubt anyone will give anymore details than this. Be prepared for a
complete shut down, and be happy if it's only a partial.

I'm keeping my ADF for a while.

z

As I understand it from the AIM, WAAS stations must receive signals from the
satellite constellation in order to provide corrections...no satellite, no
WAAS.

Bob Gardner

"Schmoe" wrote in message
...
Chris Gumm wrote:
http://cnn.netscape.cnn.com/ns/news/...&w=APO&coview=


How much would that suck during a GPS approach to minimums far away from
the crisis? Would WAAS stations be shutdown to?

"Schmoe" wrote in message
...
Chris Gumm wrote:

http://cnn.netscape.cnn.com/ns/news/...&w=APO&coview=


How much would that suck during a GPS approach to minimums far away from
the
crisis? Would WAAS stations be shutdown to?

You might be surprised at what happens if you lose RAIM inside the FAF
anyway.

If you lose the navigation radios on any approach (and it can and will
happen with any sort of approach) then the best thing to do is climb
immediately, maintaining course to the MAP as closely as possible, then
flying the missed approach procedure.

If the GPS system is shut down then you can expect to break off any approach
and revert to radar vectors.

Schmoe,

How much would that suck during a GPS approach to minimums far away from
the
crisis? Would WAAS stations be shutdown to?

One of the functions of WAAS (apart from accuracy enhancements) is integrity
monitoring. In the above mentioned case you would get a "integrity warning"
(in a predetermined time interval after the shutdown, IIRC 6 seconds) if the
satelites used for your navigation solution are affected, and should go
missed (or continue on an other nav-source, if operational and monitored).

Regards

Kai

Schmoe,

How much would that suck during a GPS approach to minimums far away from the
crisis?


How much would that suck for the huge part of the rescue and police force that
totally rely on GPS and have to respond to the crisis?

Senseless fear-mongering

--
Thomas Borchert (EDDH)

On Thu, 16 Dec 2004 14:08:48 -0500, "Chris Gumm" wrote
in ::

http://cnn.netscape.cnn.com/ns/news/...&w=APO&coview=


Well, if you can't intercept incoming missiles, you've got to do
something:


President George W. Bush's drive to deploy a multibillion-dollar
shield against ballistic missiles was set back by what critics
called a stunning failure of its first full flight test in two
years. The abortive $85 million exercise raised fresh questions
about the reliability of the first elements of the plan, an heir
to former president Ronald Reagan's vision of a space-based
missile defense that critics dubbed "Star Wars." The
interceptor missile never left its silo at Kwajalein Atoll in
the central Pacific, shutting itself down automatically because
of an "anomaly" of unknown origin, the Pentagon's Missile
Defense Agency said. About 16 minutes earlier, a target missile
had been fired from Kodiak, Alaska, in what was to have been a
fly-by test chiefly designed to gather data on new hardware,
software and engagement angles, said Richard Lehner, a
spokesman. BOEING CO., the Pentagon's prime contractor on the
project, declined comment.
(Reuters 03:50 PM ET 12/15/2004)

Mo

http://q1.schwab.com/s/r?l=248&a=103...a&s=rb041 215

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This begs the question, what do you do if you're on a GPS approach
when they shut the system down?

Larry Dighera wrote:
On Thu, 16 Dec 2004 14:08:48 -0500, "Chris Gumm" wrote
in ::


http://cnn.netscape.cnn.com/ns/news/...&w=APO&coview=



Mo


http://q1.schwab.com/s/r?l=248&a=103...a&s=rb041 215

================================================== ==============


This begs the question, what do you do if you're on a GPS approach
when they shut the system down?


You mean other than go missed and shoot something else? Kind of similar
to what you'd do if your GPS went South on you in the middle of an
approach?

Cap

On 16 Dec 2004 12:40:02 -0800, wrote in
.com::


Larry Dighera wrote:
On Thu, 16 Dec 2004 14:08:48 -0500, "Chris Gumm" wrote
in ::


http://cnn.netscape.cnn.com/ns/news/...&w=APO&coview=



Mo


http://q1.schwab.com/s/r?l=248&a=103...a&s=rb041 215

================================================== ==============


This begs the question, what do you do if you're on a GPS approach
when they shut the system down?


You mean other than go missed and shoot something else? Kind of similar
to what you'd do if your GPS went South on you in the middle of an
approach?

Cap

So, you're saying there are no GPS approaches whose missed approach
procedures rely upon GPS?