RVSM from Cabin Class

during normal air refueling join ups.. the contrail may give away the
location
sometimes about 15 miles distant the aircraft can be picked up
especially with a sun glint
10 miles, very easily
BT

"Jose" wrote in message
om...
When you are at flight levels, due to the curvature of the earth, on
first apperance, the "higher" aircraft may appear to be lower,

The curvature of the earth is greater in the bugsmasher altitudes.

How far away are you seeing these airplanes?

Jose
--
"Never trust anything that can think for itself, if you can't see where it
keeps its brain." (chapter 10 of book 3 - Harry Potter).
for Email, make the obvious change in the address.

Jose writes:

When you are at flight levels, due to the curvature of the earth, on first
apperance, the "higher" aircraft may appear to be lower,

The curvature of the earth is greater in the bugsmasher altitudes.

How far away are you seeing these airplanes?

FWIW, at FL360 aircraft will be already be in line of sight as much as
200 nm away (ground distance). Of course, human vision and
atmospheric conditions put more restrictive limits on visibility.

--
Transpose mxsmanic and gmail to reach me by e-mail.

You can see the curve 20 miles away.
"Jose" wrote in message
om...
When you are at flight levels, due to the curvature of the earth, on
first apperance, the "higher" aircraft may appear to be lower,

The curvature of the earth is greater in the bugsmasher altitudes.

How far away are you seeing these airplanes?

Jose
--
"Never trust anything that can think for itself, if you can't see where it
keeps its brain." (chapter 10 of book 3 - Harry Potter).
for Email, make the obvious change in the address.

"Kyle Boatright" wrote in message

We flew commercial back to Atlanta yesterday....
.... When another airliner passes 1,000' right under you on a reciprocal
heading with a closing speed of over 1,000 mph, it looks CLOSE.

At normal cruising altitudes (ie, above 290) opposite direction vertical
separation will be 2000 feet.

"John Gaquin" wrote in message
At normal cruising altitudes (ie, above 290) opposite direction vertical
separation will be 2000 feet.

Are you current? Most of the modern world now uses 1000' seperation up to
FL410.

D.

"Capt.Doug" wrote in message

Are you current? Most of the modern world now uses 1000' seperation up to
FL410.

I stand (or sit) corrected. Haven't flown a thing in eleven years, but your
comment prompted a bit of research, and I see the reg. Just a couple of
years ago, wasn't it?

"John Gaquin" wrote in message Just a couple of
years ago, wasn't it?

Yes, and it is a welcome addition. It gives us a lot more flexibilty to find
smooth air, get shortcuts from ATC, and conserve fuel.

D.

In article ,
"John Gaquin" wrote:

"Capt.Doug" wrote in message

Are you current? Most of the modern world now uses 1000' seperation up to
FL410.

I stand (or sit) corrected. Haven't flown a thing in eleven years, but your
comment prompted a bit of research, and I see the reg. Just a couple of
years ago, wasn't it?

In the US NAS, yes. North Atlantic tracks started using RVSM in the later
1990's.

--
Bob Noel
Looking for a sig the
lawyers will hate