A discrepancy between what the scorer sees and what the pilot
sees.

An interesting technical wrinkle has appeared when checking
pilots' track logs against the competition's definition of airspace. It appears
as though at least one of the edges of airspace is displayed differently on the
scorer's computer (using three different pieces of software) and what is
displayed on the Compeo+ (and therefore also on the Flytec 6030). Therefore, if
the pilot is relying on their flight computer to tell them where the edge of the
airspace is, they may be getting information that is inconsistent with what the
scorekeeper will be using to determine if they are in airspace or not.

Corinna was given a warning for entering airspace (at less than 100 meters) for
having a single point in her track log that was shown on the scorekeeper's
computer to be in airspace. Corinna was watching the map display on her Compeo+
as she thermalled up near the windmills and the edge of airspace and made sure
that she didn't violate airspace. But when her track log was read by the
scorekeeper it showed her doing that.

I downloaded her tracklog from her Compeo+ using FlyChart to my computer. I also
downloaded the competition's airspace definition from my 6030 using FlyChart. I
could see in SeeYou how she would have violated airspace. See here:

The straight blue line from the top of the graphic to the bottom is the edge of
the airspace. To the right of it is airspace starting at 6,000'. The point with
the red triangle is where she is seen to be piercing the lower limit of the
airspace.

I also had the opportunity to look at Corinna's Compeo+. It appeared to show the
edge of the airspace (again as defined by the meet organizers) a bit to the
left. Like this:

If the airspace shown as the red area to the left of the blue (and red) line is
a good approximation of what was displayed on Corinna's Compeo+, then the
Compeo+ would have shown her as outside the airspace.

When I viewed Corinna's Compeo+ with this flight displayed and the competition's
airspace displayed it sure appeared to me that the edge of the airspace as
displayed there was to the left of the notched V that we see above in Corinna's
track log, and therefore she would have legitimately assumed that she was
outside of airspace when thermaling up.

So the question is why is there a discrepancy between what Corinna saw on her
Compeo+ and what the scorekeepers are seeing on their computers? Is there a
problem with the data on the Compeo+? Is there a problem with the Compeo+ (as
the scorekeepers apparently believe).

On the first day of the competition the scorekeepers attempted to download the
airspace definition to pilots' 6030's and Compeo+'s. They were using GPDDump to
do so. The results were completely wrong, as Bruce Kavanaugh quickly pointed
out.

Bruce and I then asked them to download the airspace using FlyChart. This
"appeared" to fix the problem. But the question remains, why would the same data
on the computer show up so differently using two different pieces of software to
download it to the Compeo+ and 6030? Could the data be slightly corrupted when
it is downloaded, as appears to be the case here?

While this discrepancy is the key issue, there are a few other wrinkles as well.
The second graphic above displays in red the Italian airspace definition that I
downloaded from the SeeYou forum. I do not know its accuracy. It is an OpenAir
formatted file. It is slightly different in this crucial area than the
scorekeeper's air space definition. What is funny about this is that it appears
to correspond with what is actually in the Compeo+ and 6030's (or at least
Corinna's).

 Here we see the difference between the two airspace definitions at this
crucial area:

Again, the red area is the airspace as defined by the file taken from the SeeYou
forum. The blue line is the edge of the airspace as taken from the scorekeeper's 
airspace definition file. The two points at the ends of the blue line were found
using GPSDump to create a series of waypoints from the scorekeeper's airspace
definition file that was downloaded from my 6030.

The upper waypoint above used to display the edge of the scorekeeper's airspace
definition is 500 meters to the right of point used by the other airspace
definition. This would only be an issue in cases like Corinna's where a few
hundred meters count. In her case it was 300 meters.

It would seem to me that we have to be sure that what the competitors see on
their flight instruments and what the scorekeepers see on their computer match.
If not, we have to come up with some other solution for dealing with airspace
and the penalties that apply for entering it.