If FR24 installation script is giving problems, use following commands to directly download and install the latest fr24feed deb package:
wget http://repo-feed.flightradar24.com/rpi_binaries/fr24feed_1.0.44-0_armhf.deb
sudo dpkg -i fr24feed_1.0.44-0_armhf.deb
The 2nd commans above will install fr24feed package, and at the end will automatically start signup process. If it does not start signup procedure, use following command to start signup:
sudo fr24feed --signup
NOTE:
(1) During signup if asked, do NOT select receiver DVB-T, select AVR (TCP).
(2) It may ask to accept “autoconfig (yes/no)”. Type yes.and press Enter Key.