Open up core/local.config.php and find the below section and make sure they match what I have.
Config::Set('AIRPORT_LOOKUP_SERVER', 'phpvms');
Config::Set('PHPVMS_API_SERVER', 'http://api.vacentral.net');
Config::Set('PHPVMS_NEWS_FEED', 'http://feeds.feedburner.com/phpvms');
Config::Set('VACENTRAL_NEWS_FEED', 'http://feeds.feedburner.com/vacentral');
Config::Set('GEONAME_API_SERVER', 'http://ws.geonames.org');
I dont thing the api.vacentral is working well if you check the link
http://api.vacentral.net/index.php/airport/get/LGRP
it returns errors with the airport info output
fixed thanks