System-wide Information Management (SWIM) 

The present-day flight planning provisions suffer from some important limitations regarding flight information sharing, advanced notification, inconsistent flight information, information security and the flexible use of information.

A net-centric and secure environment, based on a globally consistent and unambiguous set of information elements, is needed to overcome the existing deficiencies and achieve a 4D trajectory-based globally interoperable ATM system.

4D trajectory based ATM systems have a number of data-related requirements. These include, but are not limited to:

• a secure architecture with trusted sharing of information system-wide;
• early provision of intent data;
• collaborative decision making support;
• high automation support requiring machine readability and unambiguous definition of information items.