FlightGear-data.noarch: W: explicit-lib-dependency liberation-fonts
You must let rpm find the library dependencies by itself. Do not put unneeded
explicit Requires: tags.

FlightGear-data.noarch: W: files-duplicate /usr/share/flightgear/Fonts/LiberationFonts/COPYING /usr/share/licenses/FlightGear-data/COPYING
FlightGear-data.noarch: W: no-version-in-last-changelog
FlightGear-data.nosrc: W: no-version-in-last-changelog
FlightGear-docs.noarch: W: no-version-in-last-changelog
The latest changelog entry doesn't contain a version. Please insert the
version that is coherent with the version of the package and rebuild it.

FlightGear-data.noarch: W: zero-length /usr/share/flightgear/Aircraft/Instruments-3d/ISFD/README.md
FlightGear-data.noarch: W: zero-length /usr/share/flightgear/Aircraft/Instruments-3d/kln94/auxPages.nas
FlightGear-data.noarch: W: zero-length /usr/share/flightgear/Aircraft/Instruments-3d/kln94/flightplanPages.nas
FlightGear-data.noarch: W: zero-length /usr/share/flightgear/Aircraft/Instruments-3d/kln94/settingPages.nas
FlightGear-data.noarch: W: zero-length /usr/share/flightgear/Aircraft/Instruments-3d/kln94/waypointPages.nas
FlightGear-data.noarch: W: zero-length /usr/share/flightgear/Nasal/canvas/map/README.txt
FlightGear-data.noarch: W: zero-length /usr/share/flightgear/Nasal/canvas/map/waypoints.model
3 packages and 0 specfiles checked; 0 errors, 12 warnings.