No specific info about version 5.6. Please visit the main page of AirPort Utility on Mac Informer.
Info updated on:
AirPort is a software supports the original Apple AirPort Graphite and Snow.
View information about the Apple AirPort.
It is designed to help you find and restore deleted files on your Mac.
Fixes and improves compatibility with AirPort Utility.
Utility that auto-disables the Mac's AirPort.