In article .net,
"Steven P. McNicoll" wrote:


FAAO 7110.65, para 7-4-6.b. says, "The reported ground visibility is at
least 1 statute mile." The Pilot/Controller Glossary and FAR Part 1 both
define Ground Visibility as "Prevailing horizontal visibility near the
earth's surface as reported by the United States National Weather Service or
an accredited observer."

So, what's the definition of "reported"? Why does the accredited observer
on the ground telling me on the radio "measured visibility is 2 miles" not
count as a report? And if ATC needs to know it, why is my telling the
controller that I got the weather from an accredited observer on the ground
not good enough?

I can certainly see the need for the observer to be accredited (they have
training in how visibility is determined), and I can see the need for the
observer to be on the ground (what I see from up here in the air may not be
what's going on down there on the ground), but I don't see why the pilot
may not be part of the communications chain.

I have received ATC communication via pilot relays when out of radio
contact, and served as a relay for other aircraft when they had the same
problem. Why is it OK for me to relay "ATC wants you to switch to 129.05",
but not "my observer reports 2 mile visibility"?