"Roger Hayter" wrote in message
...
whisky-dave wrote:

On Friday, 15 December 2017 12:54:58 UTC, Bob Eager wrote:
On Fri, 15 Dec 2017 11:59:43 +0000, Tim Streater wrote:

In article , Bob Eager
wrote:

On Fri, 15 Dec 2017 02:24:24 -0800, whisky-dave wrote:

The economical cruise altitude rises as the plane gets lighter, so
they want to climb gently all the way across the ocean.

But they don't do that.
They don't take the shortest route from A-B they take a route
where
they can be tracked.
Friend flew from gatwick to cacun on tuesday explan why they didn't
just fly directly across the ocean

You don't really understand map projections, do you?

Am I missing something here? Is the inebriated one referring to
Cancun
(Yucatan peninsular, Mexico)?

why not take the What's your drinking nationality...
http://www.bbc.co.uk/news/health-30500372



Take the which If so, a great circle route would appear
to take one across the Atlantic and down the East US coast, across
the
tip of Florida to Cancun.

He is. It's useless explaining to him, though.

you mean you can't explain why the aircraft 'hugs' the cost and has to
stay in a particular corridors . Can you explain why it's important for
an
aircraft to be on radar so that other planes know where you are at a
point
in time and space ?

Because it isn't true. Nowadays commercial planes have transponders
which talk to each other (hence the name), anyway.

Nope, transponder responds to the radar by transmitting back the id,
altitude etc.

TCAS is what talks to each other.