On Thu, 22 Apr 2004 18:55:26 GMT, "John T" wrote in
Message-Id: om:

"Larry Dighera" wrote in message
news
[...]
Do you know how many occur in any given
time frame?

Many international Part 91 flights occur each day.

So the answer to my yes/no question would be...? No, you don't know.

Implicit in your question is the notion that, because there are less
international Part 91 operations than domestic, there is no problem
compromising their safety. I do not hold that view.

To intentionally
design the NAS in such a way as to permit UAV operation at reduced
vision standards is unprofessional, unacceptable to public safety, and
negligent.

Unprofessional? Negligent? Reduced vision standards? What reduced
standards?

Are you implying that the ground based crew operating the UAV would be
able to meet the vision standards required of a certificated airman
and mandated by Code of Federal Regulations, Title 14, Volume 2,
Chapter 1, Part 91, Subpart A, § 91.113(b):

When weather conditions permit, regardless of whether an
operation is conducted under instrument flight rules or visual
flight rules, vigilance shall be maintained by each person
operating an aircraft so as to see and avoid other aircraft.

solely through the use of video equipment on-board the UAV? If not, I
would characterize the UAV pilot vision standards as reduced from
those required of certificated airmen.

And how long do you estimate it will take for UAVs to be operating
beyond the national boarder corridors, given the national hysteria?

I make no assumptions - including one regarding "hysteria". The only
hysterical one here appears to be you.

What has lead you to that conclusion?

...do you expect the team operating the UAV to
actually take responsibility for their failure to see-and-avoid?

You're assuming facts no in evidence.

You didn't answer the question. :-)

From
the past behavior of military in MACs with civil aircraft, I would
expect the military to deny all responsibility.

Perhaps, but the NTSB would still make their ruling, wouldn't they?

The NTSB has shown a significant lack of impartiality in at least one
civil/military MAC case:
http://www.ntsb.gov/ntsb/brief.asp?e...13X33340&key=2

This begs the question, how is the UAV's conspicuity planned to be
enhanced?

Has anybody said this enhancement would be made?

Unfortunately, there has been no mention whatsoever of enhancing the
conspicuity of UAVs operating in Joint Use airspace in any of the
literature I have read. It would seem prudent to equip the UAV with a
bright light on the front of the UAV, so the pilot on a head-on
collision course with it might be able to see it in time to attempt to
avoid it. The UAV might also be equipped with TCAS to assist in
warning of an impending MAC.