Online access to aeronautical data:

A lot of aeronautical data is provided by Croatia Control Internet Briefing system. You may search for  airports, check data concerning your airport of interest, check the longest runway, frequencies etc.

For example:

 Aerodrome Amsterdam:
  • ICAO Code
    		•  EHAM
  • ATA/IATA Code
    		•  AMS
  • Latitude
    		•  N52° 18' 29.00''
  • Longitude
    		•  E004° 45' 51.00''
  • IFR Capabilities
    		•  Yes
  • Longest Runway
    		•  3800 meters
  • GND: Ground Control
    		•  121.700
  • ...
    		•  ...

    Furthermore data from fixes, intersections, restricted areas and much more is also accessible in the Croatia Control Internet Briefing system.