Computer software, namely software for aircraft flight schedule management and operations control, monitoring of flight schedules, maintenance planning and tracking, flight monitoring, weather monitoring, providing flight information, flight management, cost evaluation; software for client/server applications, software for LAN (local area network) or WAN (wide area network) communications; decision support software which provides real time alerts and proposes solutions; application software running on LAN (local area network) stations; software for message distribution; software for communication with databases; software for querying databases and report generation; pre-recorded magnetic computer tapes for aircraft flight schedule management and operations control, monitoring of flight schedules, maintenance planning and tracking, flight monitoring, weather monitoring, providing flight information, flight management and cost evaluation; electronic instruction manuals and newsletters relating to the foregoing computer software sold as a unit, both downloadable and recorded on computerized media