AeroTransport Data Bank - http://www.aerotransport.org
Paid subscription site provides information on all airlines and transport aircraft operators, worldwide, with history on aircraft and airports. |
FlightStats - http://www.flightstats.com/
Real-time flight status and historical flight delay information. |
Professional Pilots Rumor Network - http://www.pprune.com/
Discussion forum covering most aspects of aviation. |