On Mar 6, 6:46 pm, Ron Rosenfeld wrote:
On 6 Mar 2007 12:04:19 -0800, "Jon" wrote:

I believe you may still shoot the approach if the receiver indicates
it's available. The NOTAM
simply prevents you from flight planning on it.

Where is that documented?

It was 2003 since I last worked on it, will have to go dig up the
docos. I may have misspoken and the above (wrt flight planning only)
applies only for the case of the inverted 'w'.

The only documentation that I've been able to locate references the terms
"unreliable" to be used for site specific notams except when the chart has
a "w" (which IS present on the KAUG NACO GPS 35 approach chart); or
"unavailable" for area-wide gps outages.

If the "w" is present, site-specific Notams are not issued for that site.
You're supposed to know that "unreliable" applies.

Yep. The inverted 'w' definitely means you can't flight plan on it.

That documentation also explains pilot options if those Notams exist.

But I've not seen any documentation as to the meaning of a site-specific
WAAS "OTS" Notam.

I know for a fact (I coded it) that we don't output such a NOTAM, so
it had to have been manually entered, probably down at the NOCC in
Herndon.

My suspicion is that this Notam got into the system in error, and has never
been removed. But no one has confirmed it as yet.

It's not clear to me that it was initially entered in error. If they
service availability dropped below an acceptable level (due to the GEO
repositioning last year), it might sense, since the approach plates
are already out there. I've heard it's similar to taking an ILS OTS?

It's certainly possible, though, that it should be canceled, but I
haven't gotten any responses from the several voicemails I've left to
folk. Will try a few more contacts during the day...

But if you have documentation for what you wrote, that would be helpful in
coming up with an alternate explanation.

Dusting off some folders, standby 1...

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

Regards,
Jon