Dave - Good luck trying to convince people this was a good decision.
It just appears to be contrary to how others interpret the meaning of
"L" and "A". This is not how I believe all Cambridge products have
used an "L" and "A" attributes, certainly not the C302/303 and I think
older Cambridge devices. With Cambridge effectively defining the
standard for this why was if felt necessary to use the reverse
interpretation that "A" does not imply "L"?

What makes you think Cambridge is defining the standard? I find the
SN10 format easy and simple to use. As far as using the A or L to
figure out what kind of airport/landing area the waypoint is - all you
have to do is hit the help button and call up the waypoint description
- then you get all the data about it, including runway length, width,
freqs, etc! Take a look at the data contained in the CAI format
compared to the NDB format, and you will see the advantage of the
SN10s format.

Kirk
66

Happy SN10 user - who wouldn't use a Cambridge to fill an empty hole
in my panel!