A computer-implemented system and method processes flight position information and provides a notification to a remote user in response to a triggering event. Typically, flight position data is received over a digital network. The service accepts requests for notification based upon the position of a specified flight and subsequently provides that notification based upon the flight position data. Upon receiving a user query, a server retrieves a result set from the flight position data and determines if the triggering criteria has been met. In one form, the requested notification may be presented to the user in the form of an e-mail, telephone call, text message or the like. Also disclosed is a system for flight tracking or planning which includes photographs supplied by remote users of the aircraft for which the tracking or planning is associated, for use by other remote users that see the association of the supplied photos with the tracked or planned flight. Still further disclosed is a social system for use with flight tracking or planning which allows affiliated users to share information to the exclusion of other non-affiliated users.