Foro x-plane.es

The portal (EAD) of the European AIS database (Eurocontrol). You need to register. ;)
http://www.ead.eurocontrol.int/eadcms/eadsite/index.php.html (http://www.ead.eurocontrol.int/eadcms/eadsite/index.php.html)
United Kingdom: http://www.nats-uk.ead-it.com/public/index.php.html (http://www.nats-uk.ead-it.com/public/index.php.html)
France: https://www.sia.aviation-civile.gouv.fr/html/frameset_aip_uk.htm (https://www.sia.aviation-civile.gouv.fr/html/frameset_aip_uk.htm)
The World: http://www.the-airport-guide.com/search.php?by=country (http://www.the-airport-guide.com/search.php?by=country)
http://www.sia.aviation-civile.gouv.fr/asp/frameset_fr.asp?m=16 (http://www.sia.aviation-civile.gouv.fr/asp/frameset_fr.asp?m=16)
Danmark: http://www.slv.dk/Dokumenter/dscgi/ds.py/View/Collection-52 (http://www.slv.dk/Dokumenter/dscgi/ds.py/View/Collection-52)
http://www.slv.dk/Dokumenter/dsweb/View/Collection-12 (http://www.slv.dk/Dokumenter/dsweb/View/Collection-12)
Portugal:  http://www.nav.pt/ais/ (http://www.nav.pt/ais/)
Alemania:  http://www.dfs-ais.de/ (http://www.dfs-ais.de/)