I found a severe issue with all Northstar M3 Approach GPSes today. I
tried to setEly, MN (ELO) as a waypoint and it wasn't in the database
(neither was Eleveth (EVM, I think)). After fiddling and changing
data cards to the new cycle (both were missing the airports), I called
Jeppessen.

It seems that with all the new approaches coming along, there is not
enough room on the data card to hold all airports, and CMC (the
company that supports Northstar), has been shaving the northermost and
southernmost airports out of the database. The info he had said the
northern limit for a previous cycle was around 47.7 degrees
north and the southern limit was around 23 degrees. He also said that
these boundries would shrink as more approaches are added. He
mentioned that CMC was thinking about splitting the database somehow.

They did that with the M1 loran with no overlap between the
databases. I live in Wisconsin and the split went right through the
middle of the state! What really upsets me is that this problem is
not documented and the Jepp rep said he could read the info to me but
I couldn't get a copy!

If any of you have M3 units or know anyone who does and want to make
your concerns known, the CMC Customer Support manager is Jim Brennan
at 514-748-3083. I haven't called him yet, but plan to tomorrow. I
can understand they have a problem, but it should be documented. I
will highly recommend they document the database boundaries and if
they split the database to have as much overlap as the card can hold
(East coast to the Rockies and West coast to the Appalachians, for
example).





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