Re: Slice it in half...
Posted: 03 Oct 2009, 13:22

Out of Capetown at Dawn and bound for the ice of MacMurdo Station.

Leaving behind the Southern tip of Africa.

Here is the map, with Africa at the top and Antarctica at the bottom.

Here is the remaining track across Antarctica to MacMurdo. Navigation will get a bit strange now.

Suddenly at a Latitude of about S83 degrees the HSI and other references to Heading and Track switched from MAG to TRU. You can see the letters "TRU" have appeared at the top of the HSI. Since the MAGVAR here is pretty huge the degree scale also swung a huge lump and from a heading around South, it has swung to around East. However, the FMC seems to know what it is doing and instructs the Autopilot correctly to hold us on that Magenta line. The position shown is about as far South as our track takes us...

...as you can see from this map as our track is tangential to that 84 degrees South circle of Latitude...When we got back to that next circle out (S83) then the HSI reverted to MAG and navigation was back to normal for the rest of the flight.

MacMurdo Station was obviously built in a bit of a hurry by Microsoft, with no Flatten and the ice runways seem to float about above the pack ice. I thought better of using that bit to my right here which seems to be floating on the water and I will take off from here using the runway to my left which seems fine and has firm pack ice under it. There is no parking here and only the one NDB that I added for navigation...When I get time, I will give it a flatten and a bit of parking and then I will send a Traffic version of this aeroplane round the route once a week
