KAUG Notam Question

On 5 Mar 2007 13:33:06 -0800, "Brad" wrote:

On Mar 3, 11:22 am, Ron Rosenfeld wrote:
KAUG AUGUSTA STATE

04/001 - WAAS LPV WAAS LNAV/VNAV OTS WIE UNTIL UFN

This Notam has been posted, well, since April.

No one seems to be sure of what it means.

Translating the abbreviations into English is easy enough. The Notam
basically states that the LPV and LNAV/VNAV approaches are out of service
until further notice.

BUT,

Published guidance, that I have been able to locate, with regard to GPS
WAAS Notams indicates that the terms "unreliable" or "unavailable" should
be used and says nothing about OTS. If the Notam does read UNREL or
UNAVAIL, guidance allows you to execute the approach if the signal is
adequate.

Again, there is no guidance regarding OTS.

Furthermore, the office in OK that issues GPS Notams tell me it didn't come
from them, and it is a D-Notam. They don't know what it means or who
issued it.

I've contacted (or been bounced from) a few other offices having to do with
Notams, without finding anyone who can explain this.

(When I called the Bangor FSS, they said they didn't know and advised me to
contact the "FAA" :-))

My sense is that this may be a Notam that was issued contrary to guidance,
and should have been removed long ago, but was not. But perhaps someone
has a better explanation.

And, two days ago, the signal on an LPV approach at that airport was
adequate for my CNX80 to give me an LPV annunciation.
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

Thanks for letting me know about this Ron. I'm working with folks
associated with the NOTAM office to correct this. I'll report back
when I hear more.

Great. Thanks.

So far I've spoken with people who issue GPS Notams (in OK), regular Notams
(in or near DC); flight standards near Boston and flight procedures (I
think in Atlanta). No one seems to know -- several have said they are
looking into it. The most logical theory is that it was issued a long time
ago as a D-Notam, perhaps even before (or in spite of) current published
guidance.

My guess is that it should be changed from OTS to UNREL, as GPS WAAS
signals are flaky in Maine, in general.

I've seen it there for a long time, but did not feel the impetus to call
and investigate until after flying the approach (which I did VFR) and
finding the signal to be good.

Do you have a position with the FAA, Brad?
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

On Mar 5, 8:54 pm, Ron Rosenfeld wrote:
On 5 Mar 2007 13:33:06 -0800, "Brad" wrote:





On Mar 3, 11:22 am, Ron Rosenfeld wrote:
KAUG AUGUSTA STATE

04/001 - WAAS LPV WAAS LNAV/VNAV OTS WIE UNTIL UFN

This Notam has been posted, well, since April.

No one seems to be sure of what it means.

Translating the abbreviations into English is easy enough. The Notam
basically states that the LPV and LNAV/VNAV approaches are out of service
until further notice.

BUT,

Published guidance, that I have been able to locate, with regard to GPS
WAAS Notams indicates that the terms "unreliable" or "unavailable" should
be used and says nothing about OTS. If the Notam does read UNREL or
UNAVAIL, guidance allows you to execute the approach if the signal is
adequate.

Again, there is no guidance regarding OTS.

Furthermore, the office in OK that issues GPS Notams tell me it didn't come
from them, and it is a D-Notam. They don't know what it means or who
issued it.

I've contacted (or been bounced from) a few other offices having to do with
Notams, without finding anyone who can explain this.

(When I called the Bangor FSS, they said they didn't know and advised me to
contact the "FAA" :-))

My sense is that this may be a Notam that was issued contrary to guidance,
and should have been removed long ago, but was not. But perhaps someone
has a better explanation.

And, two days ago, the signal on an LPV approach at that airport was
adequate for my CNX80 to give me an LPV annunciation.
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

Thanks for letting me know about this Ron. I'm working with folks
associated with the NOTAM office to correct this. I'll report back
when I hear more.

Great. Thanks.

So far I've spoken with people who issue GPS Notams (in OK), regular Notams
(in or near DC); flight standards near Boston and flight procedures (I
think in Atlanta). No one seems to know -- several have said they are
looking into it. The most logical theory is that it was issued a long time
ago as a D-Notam, perhaps even before (or in spite of) current published
guidance.

My guess is that it should be changed from OTS to UNREL, as GPS WAAS
signals are flaky in Maine, in general.

I've seen it there for a long time, but did not feel the impetus to call
and investigate until after flying the approach (which I did VFR) and
finding the signal to be good.

Do you have a position with the FAA, Brad?
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)- Hide quoted text -

- Show quoted text -

I'm a contractor working with implementation for the WAAS program.
I've sent an email to the NOTAM specialist on the team.

With some recent system enhancements, coverage in ME is much better
now. For a real-time snapshot of WAAS coverage, check out the
following link:

http://www.nstb.tc.faa.gov/vpl.html

Brad

On 5 Mar 2007 20:03:23 -0800, "Brad" wrote:



I'm a contractor working with implementation for the WAAS program.
I've sent an email to the NOTAM specialist on the team.

With some recent system enhancements, coverage in ME is much better
now. For a real-time snapshot of WAAS coverage, check out the
following link:

http://www.nstb.tc.faa.gov/vpl.html

Brad

I see. Thanks.

I'm aware of that web site, and find it quite useful. Unfortunately, it is
not unusual for me to lose vertical guidance on the approaches into my home
base KEPM (far eastern ME).

It is also not uncommon to see the LPV line at that site excluding most of
ME.

Any chance this will improve in the near future?

Thanks.

--ron
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

On 5 Mar 2007 20:03:23 -0800, "Brad" wrote:

I'm a contractor working with implementation for the WAAS program.
I've sent an email to the NOTAM specialist on the team.

With some recent system enhancements, coverage in ME is much better
now. For a real-time snapshot of WAAS coverage, check out the
following link:

http://www.nstb.tc.faa.gov/vpl.html

Brad

Also, I just checked the web site now (6 MAR 07 12:06:17 GMT on the chart)
and the RED line excludes the eastern half of MA, almost all of VT, all of
NH and all of ME!
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

On Mar 6, 7:14 am, Ron Rosenfeld wrote:
On 5 Mar 2007 20:03:23 -0800, "Brad" wrote:

I'm a contractor working with implementation for the WAAS program.
I've sent an email to the NOTAM specialist on the team.

With some recent system enhancements,

The biggie being the new 3rd GEO, I presume, Brad?

coverage in ME is much better
now. For a real-time snapshot of WAAS coverage, check out the
following link:

http://www.nstb.tc.faa.gov/vpl.html

Brad

Also, I just checked the web site now (6 MAR 07 12:06:17 GMT on the chart)
and the RED line excludes the eastern half of MA, almost all of VT, all of
NH and all of ME!
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

I can go back and check, but I'm believe the time the NOTAM was issued
correlates fairly
closely with the re-positioning of the GEO performed last year.

Note that KAUG is one of the locations which has the Inverted-W on the
approach. This means
(among other things related to flight planning) that Predictive NOTAMs
for it are not issued. They
can't be since they're not run through the model.


Regards,
Jon

Ron Rosenfeld wrote:


Also, I just checked the web site now (6 MAR 07 12:06:17 GMT on the chart)
and the RED line excludes the eastern half of MA, almost all of VT, all of
NH and all of ME!
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

We have a WAAS availability problem in Southern California, too. It was
explained to me that coastal areas cannot be surrounded by reference
stations, thus the limitation.

On Mar 6, 3:47 pm, Sam Spade wrote:
Ron Rosenfeld wrote:

Also, I just checked the web site now (6 MAR 07 12:06:17 GMT on the chart)
and the RED line excludes the eastern half of MA, almost all of VT, all of
NH and all of ME!
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

We have a WAAS availability problem in Southern California, too. It was
explained to me that coastal areas cannot be surrounded by reference
stations, thus the limitation.

True.

In your area, having a WRS in Honolulu helps on that "side".

Regards,
Jon

On Tue, 06 Mar 2007 12:47:31 -0800, Sam Spade wrote:

Ron Rosenfeld wrote:


Also, I just checked the web site now (6 MAR 07 12:06:17 GMT on the chart)
and the RED line excludes the eastern half of MA, almost all of VT, all of
NH and all of ME!
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

We have a WAAS availability problem in Southern California, too. It was
explained to me that coastal areas cannot be surrounded by reference
stations, thus the limitation.

Looks like pretty good coverage right now. 23:42:16Z And VT, NH, ME and
the eastern 1/2 of MA are still outside the LPV zone.

I'll trade!
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)