I work on aircraft that up until last year received updates via ZIP DISK. Do you know how hard it is to find a working ZIP disk and/or ZIP drive? Luckily we c

I work on aircraft that up until last year received updates via ZIP DISK. Do you know how hard it is to find a working ZIP disk and/or ZIP drive? Luckily we convinced the owner to update their avionics and now it uses... CDs? DVDs? A laptop? I honestly don't know. Something that isn't ZIP disks. We also have aircraft that need floppy disks.