I will need to fly IFR between the US and Canada. Because Bendix-King has split the North America GPS database for the KLN-89B into separate databases for the lower 48 states and Canada/Alaska, I believe I will have to swap databases during border-crossing flights. Databases can be uploaded to the KLN-89B from a laptop, but that is not practical in flight. I think I will need a second database card pre-loaded with the Canadian database so that I can turn off the GPS, change cards, then reboot the GPS in flight. Unfortunately, Bendix/King no longer sells the physical cards for the KLN-89B database. Does anyone know of a source for these? I suppose I could purchase a used KLN-89B just to get the card...