IFD540 / IFD440 Default WiFi Password
IFD Host Network password is abcdef1234
This is customizable, but must be a minimum of 8 characters.
In AviOS10.2 or earlier, you may locate the IFD WiFi Password on the Network Configuration Page in Maintenance Mode. Picture Below:
(This information can be found in the IFD 4XX and 5XX series Pilot Guides)
In IFDs running AviOS10.3 or later, the network configuration is accessible and customizable through flight mode under the AUX > Setup tab under Connectivity > Networks.
Find the IFD Hotspot, and you will find the password for the network.
The default password is abcdef1234