is a method of managing demand through constrained airspace leveraging the use of one or more FCAs while considering customer preference with regard to both route and delay as defined in a Trajectory Options Set (). TMIs are managed through the Traffic Situation Display (). The will allow the customer to better manage flights by expressing route and delay preferences. Whereas a traditional flight plan contained a single request with a defined route, altitude, and speed, a may contain multiple trajectory options with each one containing a different route, altitude, or speed. In addition to multiple options within a single , each option may contain “start” and “end” times which they are willing to accept for that particular option. Each option will be ranked in the order of customer preference indicating their willingness to accept one option over another. This will be expressed in minutes of ground delay. Using algorithms comparing capacity and demand, the will look at each trajectory option and determine the amount of ground delay that would need to be associated with that option (which may be zero). will then assign the most preferred trajectory available. Customers must file flight plans in accordance with the option assigned. Customers may manage their flights through the use of the or through the substitution of flights.
may be applied to all aircraft departing airports in the contiguous United States and from select international airports. Aircraft that have been assigned an in a should not be subject to additional delay. Exceptions to this policy are miles-in-trail and departure/en route spacing initiatives that have been approved by the .
- - Collaborative Trajectory Options Program - A type of traffic management initiative which leverages one or more FCAs to identify demand. Then, based on customer preferred options (as specified in a ), it assigns either a route to avoid the FCA, or a route and to meet an allocated slot time within the FCA.
- - Trajectory Options Set - A message sent by the user to TFMS defining a group of preferences for how they would like to see a specific flight managed. These preferences are defined through a combination of routes and/or altitudes and/or speeds with each trajectory being weighted through the use of flight operator submitted preferences.
- In conjunction with the field facilities, identify the constraint through the use of FEA(s)/FCA(s).
- Conference affected facilities and system users as appropriate.
- Create the in the Traffic Situation Display.
- When time permits, send the Proposed with the advisory.
- Send the Actual with the advisory.
- Coordinate with affected facilities to ensure the is adequately managing demand.
- Revise parameters as necessary and send the Revised .
- Cancel the as per paragraph .
The ARTCC TMU must:
- Issue a GI message advising of the . In some instances, verbal notification, in addition to a GI, may enhance the dissemination of information.
- Monitor the effectiveness of the and notify the with requests for adjustments and/or revisions as necessary.
- Issue assigned route and information to non FDEP/FDIO-equipped towers and other customers in sufficient time for proper planning and control actions. This does not include non-FDEP towers that are satellites of TRACON facilities.
- Relay information, received from Terminal facilities, to the about issues (i.e., flights requiring a revision due to mechanical or flight crew duty issues).
- Ensure route compliance with assigned option and issue route amendments as needed.
- Provide information, when requested, for flights departing underlying non-towered airports. If a flight departing a non-towered airport is airborne and not in compliance with a , coordinate with the for the appropriate course of action.
The TRACON/ATCT must:
- Use the /-C to verify when missing or pilots advise they have something different.
- Ensure the is included in the flight clearance when a is in effect.
- Issue information to non-FDEP/FDIO-equipped towers.
- Provide information, when requested, for flights departing underlying non-towered airports.
- Forward issues to their overlying facility.
- Facilities with s, assist the to ensure route compliance.
Field facilities will only have the “unlimited” option available for use.
- Field facilities requesting a time other than the time assigned through the “unlimited” option must coordinate through the .
- Field facilities without the “UPDATE EDCT” feature must contact their overlying facility to request a new .
- The may amend s via the “UPDATE EDCT” feature by first attempting to utilize the “Unlimited” option, followed by the “Limited” option, followed by the “Manual” option.
- Conference facilities and customers as appropriate to develop an operational plan for exiting the .
- Cancel the and transmit an advisory stating the has been canceled.
- Issue cancellation information to underlying facilities.
- Notify facility personnel, as appropriate, of the cancellation.