My book say PIREPs are acceptable for the fact that I have to disseminate
them. Controllers can make a ground vis report. AWOS/ASOS is ground vis.
METARs 45 minutes old will suffice due to the requirements of issuing a new
METAR when the vis changes by a reportable value. And if my memory serves
me right, that is +/- 1/4 mile when it gets down around 1 mile. Also, I say
it doesn't have to be an "absolutely certified weather observer", if that
was the case there would be no such thing as a contact approach. That's
my take on it, any ideas from you pilots?

oneatcer

"Stan Prevost" wrote in message
...

"raphaël langumier" wrote in message
...
Yes,

Ground visibility should be at least 1 SM and the pilot have to request
the contact approach.
Raf


The AIM says that, to request the contact approach, the pilot must have
one
mile *flight* visibility. For ATC to approve the request, the *reported*
*ground* visibility must be one mile.

The question is really how literally that "reported ground visibility"
rule
is used. Is a PIREP acceptable? Are conditions observed five miles away
by
a certified human weather observer acceptable? Can any tower controller
at
the field make an acceptable report? Is the AWOS/ASOS observation "ground
visibility"? Will a METAR report 45 minutes old suffice? Or must it
absolutely be a certified weather observer on the field reporting current
conditions to whoever calls on the landline? Or what?

Stan