On Fri, 20 Jan 2017 15:09:04 +0000, "
wrote:

On 20/01/2017 12:56, Recliner wrote:
On Fri, 20 Jan 2017 11:27:27 +0000, Roland Perry
wrote:

In message
-septe
mber.org, at 10:35:45 on Fri, 20 Jan 2017, Recliner
remarked:

It's the 737-700ER, with a range of 5,630 nm. That's enough to get
from London to anywhere in the continental US.

Not I suspect if you include fuel safety margins.

Perhaps the range has haht factored in, otherwise it's pretty
meaningless.

No, they always quote the range like that.

Like what - with a typical safety margin included, or without?

Without. They quote the maximum range with nothing in reserve. They
normally also state whether it's the max fuel or max payload range
(you can't normally have both at once).

The airlines then have to factor in all the route/flight specific
stuff when calculating the usable range. For example, you need
different reserves for different routes (Easter Island being an
example of an extreme case, where you need a huge reserve).

As another example, Qantas is introducing a new non-stop flight
between London and Perth. This will need to carry much larger reserves
on its eastbound than its westbound flights, as a flight that can't
quite make London has numerous diversion airports along its route, but
there aren't such diversions available for a flight to Perth:

http://www.gcmap.com/mapui?P=LHR-PER...&EV=410&EU=kts


When is that due to start flying?

March 2018:
https://www.bloomberg.com/news/articles/2016-12-11/qantas-to-fly-direct-perth-london-in-17-hours-with-dreamliner