GPS Outage?

Los Angeles Center (Palmdale CA) [ZLA]: September NOTAM #12 issued by
Gps Notam OA [GPS]
GPS is unreliable and May be unavailable within a 317 nautical
miles radius of 360056.3N/1173627.8W at FL400, decreasing in area with
decrease in altitude to a 267 nautical miles radius at FL250, 195
nautical miles radius at 10000 ft. mean sea level, and 186 nautical
miles radius at 4000 ft. above ground level. the impact area also
extends into the Mexican FIR 2000 - 0100 daily effective from
September 10th, 2007 at 01:00 PM PDT (0709102000) - September 15th,
2007 at 06:00 PM PDT (0709160100)

They're are up to it again, with our tax money.
My planned flight tomorrow may have the same problem, and it's
possible through Saturday. Last time they announced this, the GPS
blocking was hardly used, probably didn't work. Seems the jamming
system works now.
Jim

JS wrote:
Los Angeles Center (Palmdale CA) [ZLA]: September NOTAM #12 issued by
Gps Notam OA [GPS]
GPS is unreliable and May be unavailable within a 317 nautical
miles radius of 360056.3N/1173627.8W at FL400, decreasing in area with
decrease in altitude to a 267 nautical miles radius at FL250, 195
nautical miles radius at 10000 ft. mean sea level, and 186 nautical
miles radius at 4000 ft. above ground level. the impact area also
extends into the Mexican FIR 2000 - 0100 daily effective from
September 10th, 2007 at 01:00 PM PDT (0709102000) - September 15th,
2007 at 06:00 PM PDT (0709160100)

They're are up to it again, with our tax money.
My planned flight tomorrow may have the same problem, and it's
possible through Saturday. Last time they announced this, the GPS
blocking was hardly used, probably didn't work. Seems the jamming
system works now.
Jim

Jim

As I said on the phone, I'm going to re-register with DUATS. Thanks.

Paul

On Sep 11, 12:05 am, "P. Corbett " wrote:
JS wrote:
Los Angeles Center (Palmdale CA) [ZLA]: September NOTAM #12 issued by
Gps Notam OA [GPS]
GPS is unreliable and May be unavailable within a 317 nautical
miles radius of 360056.3N/1173627.8W at FL400, decreasing in area with
decrease in altitude to a 267 nautical miles radius at FL250, 195
nautical miles radius at 10000 ft. mean sea level, and 186 nautical
miles radius at 4000 ft. above ground level. the impact area also
extends into the Mexican FIR 2000 - 0100 daily effective from
September 10th, 2007 at 01:00 PM PDT (0709102000) - September 15th,
2007 at 06:00 PM PDT (0709160100)

They're are up to it again, with our tax money.
My planned flight tomorrow may have the same problem, and it's
possible through Saturday. Last time they announced this, the GPS
blocking was hardly used, probably didn't work. Seems the jamming
system works now.
Jim

Jim

As I said on the phone, I'm going to re-register with DUATS. Thanks.

Paul

there are often NOTAMs issued for areas of known GPS outagaes

P. Corbett wrote:

As I said on the phone, I'm going to re-register with DUATS. Thanks.

If you are doing that to get NOTAMS, take a look at this FAA NOTAM site:

https://pilotweb.nas.faa.gov/distrib...TOKEN=89793005

It's the most useful I've found for NOTAMS, and I like it far more than
DUATS. I mostly use the Radius Search, since I usually don't know which
direction I'm going. A 100 nm radius produces a lengthy list, but I can
page through it quickly, because airport listing with NOTAMS are a
different color. Other NOTAMS are listed, in addition to the airport NOTAMS.

I haven't used DUATS for a several years, as I found I could get better
information, presented more usefully, from other places on the Internet.
I could never stop DUATS from giving me pages and pages of worthless
information. Now, give me Dr Jack, NWS weather for the local area,
satellite photos, FAA's NOTAM site, and the NIFC graphical TFR site, and
I'm good to go.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly
* "Transponders in Sailplanes" http://tinyurl.com/y739x4
* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org