PMDG 737NGX 0.00.137
TUTORIAL #2
For Simulator Use Only DO NOT DUPLICATE 27FEB15 RTM
The FMC only allows direct wind entries for cruise waypoints – in
our case the first waypoint considered cruise is the
Germinghausen (GMH) VOR on page 3 and the last one is
Dinkelsbuhl (DKB) VOR on page 4. The rest of the waypoints on
the 9 pages are climb or descent waypoints. The FMC does not
account for climb wind and it takes descent wind into account in a
different way that we’ll get to shortly.
We can insert a winds aloft prediction specific to each cruise waypoint in
our flight and this will make the prediction as accurate as it can be. This is
more important to do on longer flights where a significant error versus the
average could result in a fuel problem.
Pull AS back up and scroll the bottom pane down (this is on the
Briefing page in ASN) a bit until you see data that looks like this:
This is a chart of the winds aloft and temperatures from 6000 feet
all the way up to FL490. We’re interested in the bottom entry in
the third column for all of these, which is for our cruise altitude of
FL390. If your cruise altitude is between two of these columns,
then take an average of the two to get that waypoint’s value.
Scroll down until you see GMH through DKB. For me the values
are:
o GMH – 319/33
o TESGA – 308/30
o BOMBI – 307/30
o HAREM – 299/27
o ELMOX – 299/27
o DKB – 289/27
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