When logged in, from the command line, execute the following commands.
This will download and install the PiAware repository package, which tells your Pi's package
manager (apt) how to find FlightAware's software packages in addition to the packages provided
sudo dpkg -i piaware-repository_3.3.0_all.deb
This will download and install PiAware and required dependencies on your Raspberry Pi.
sudo apt-get update
sudo apt-get install piaware
This will enable automatic and manual (web-based, via your request) PiAware software updates.
These updates are disabled by default. To leave updates disabled, skip this step.
sudo piaware-config allow-auto-updates yes
sudo piaware-config allow-manual-updates yes