Is there an online source for European Instrument Approach Procedures?
Eurocontrol has an online repository of European Aeronatical Information Services.

You'll need to register, but the basic service is free.

By default, the application is JAVA applet based, which works not in the best way. After logging on, you can change the default behaviour to HTML based, which makes it more user friendly. 



Then clicking "Enter Application" will bring to the next level.

Here you'll find several reporting options, but what you are interested in is located under "PAMS Light [AIP]" 



Select the country you are interested in, "Charts" for AIP type and "AD" for Aerodrome and there you have the charts.