REFLECTOR:GPS Outage
jack davis
reflector@tvbf.org
Sat, 20 Sep 2003 11:09:12 -0400
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Ronnie,
They do the same thing up here near the D.C. area quite often. It =
really bugs me. The one in this area is centered on the Patuxent River =
Naval Air Station.
Jack
----- Original Message -----=20
From: Ronnie Brown=20
To: reflector@tvbf.org=20
Sent: Friday, September 19, 2003 3:00 PM
Subject: REFLECTOR:GPS Outage
I know this is off topic, but a bunch of V's are based in Florida. =
This NOTAM says the GPS system is unreliable for an area of 115 mile =
radius at 4000 feet around a point that is about 50 miles off shore from =
Jacksonville, FL. This would impact a large area of the southeast. This =
is going on from today through September 23.
Anybody know what is going on? Is our Navy playing around with one of =
our primary navigation systems??? and compromising the safety of =
aviation in large area of the southeast? It would seem that if the =
Navy/US Gov needed to test GPS reliability and performance, they could =
get a whole lot further out than 50 miles off the coast????
09/053 - GPS UNRELIABLE WITHIN A 270 NM RADIUS OF 305000N/0802500W AT =
FL400. THIS AREA DECREASES WITH ALTITUDE TO A CIRCLE OF RADIUS 225NM AT =
FL250 THEN TO A CIRCLE OF RADIUS 160NM AT FL100 DOWN TO A CIRCLE OF =
RADIUS 115NM AT 4000 AGL. IFR OPERATIONS BASED UPON GPS NAVIGATION =
SHOULD NOT BE PLANNED IN THE AFFECTED AREA DURING PERIODS INDICATED. =
THESE OPERATIONS INCLUDE DOMESTIC RNAV OR LONG RANGE NAVIGATION =
REQUIRING GPS. THE OPERATIONS ALSO INCLUDE GPS STANDALONE AND OVERLAY =
INSTRUMENT APPROACH OPERATIONS 1500-1900/2300-0300 DLY 19 SEP 15:00 =
UNTIL 23 SEP 03:00
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<DIV><FONT face=3DArial size=3D2>Ronnie,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>They do the same thing up here near the =
D.C. area=20
quite often. It really bugs me. The one in this area is =
centered on=20
the Patuxent River Naval Air Station.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Jack</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dromott@adelphia.net =
href=3D"mailto:romott@adelphia.net">Ronnie=20
Brown</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dreflector@tvbf.org=20
href=3D"mailto:reflector@tvbf.org">reflector@tvbf.org</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, September 19, =
2003 3:00=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> REFLECTOR:GPS =
Outage</DIV>
<DIV><BR></DIV>
<DIV><FONT size=3D2>I know this is off topic, but a bunch of V's are =
based in=20
Florida. This NOTAM says the GPS system is unreliable for an =
area of 115=20
mile radius at 4000 feet around a point that is about 50 miles off =
shore from=20
Jacksonville, FL. This would impact a large area of the =
southeast. This=20
is going on from today through September 23.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Anybody know what is going on? Is our Navy =
playing=20
around with one of our primary navigation systems??? and compromising =
the=20
safety of aviation in large area of the southeast? It would seem =
that if=20
the Navy/US Gov needed to test GPS reliability and performance, =
they=20
could get a whole lot further out than 50 miles off the =
coast????</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT face=3D"Courier New"><STRONG>09/053</STRONG> - GPS =
UNRELIABLE WITHIN=20
A 270 NM RADIUS OF 305000N/0802500W AT FL400. THIS AREA DECREASES WITH =
ALTITUDE TO A CIRCLE OF RADIUS 225NM AT FL250 THEN TO A CIRCLE OF =
RADIUS 160NM=20
AT FL100 DOWN TO A CIRCLE OF RADIUS 115NM AT 4000 AGL. IFR OPERATIONS =
BASED=20
UPON GPS NAVIGATION SHOULD NOT BE PLANNED IN THE AFFECTED AREA DURING =
PERIODS=20
INDICATED. THESE OPERATIONS INCLUDE DOMESTIC RNAV OR LONG RANGE =
NAVIGATION=20
REQUIRING GPS. THE OPERATIONS ALSO INCLUDE GPS STANDALONE AND OVERLAY=20
INSTRUMENT APPROACH OPERATIONS 1500-1900/2300-0300 DLY 19 SEP 15:00 =
UNTIL 23=20
SEP 03:00</FONT></DIV></BLOCKQUOTE></BODY></HTML>
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