I would still vote for the 89B. The '94 is plug compatible and makes
a nice
upgrade. It's a lot like a 430 on the GPS side.

The 90B has no upgrade path whatever. Not plug compatible with
anything.

Bill Hale

On Oct 5, 6:25*pm, "Mike" nospam@ microsoft.com wrote:
" wrote in message

...

I am considering KLN-90B as replacement for my M-3 Approach. *Question
for experienced KLN-90B users: *Legality aside, can you operate
KLN-90B in approach mode (doing GPS approaches) with an outdated
database?

Thanks in advance,

Robin Hou

Yes.