Salmakis/OpenTTD-RemoveSpacePlanes

Use this, when you want to play with default planes, but you dont like the futuristic ones

Use this, when you want to allow only passanger transports on monorail with the base set.
You can still refit the 'Millennium Z1' Train.

check https://github.com/Salmakis/OpenTTD-RemoveSpacePlanes for source.