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AMAN Set Up

1.Backround Information

The issue and its solution:

Aircraft enter the TMA at several feeder fixes, the waypoint where the STAR begins. For landing, all aircraft must be sequenced. Here, the problem is building the optimal sequence of aircraft as there are several constraints involved (e.g. wake turbulence, runway specific rates depending on high speed exits, departure gaps). AMAN can calculate this sequence and display it to the controllers, which in turn can act on it when deciding who is allowed inbound without (further) delays, or if holding, who may leave the hold and when.

An arrival manager (or AMAN) works as follows:

  • An aircraft approaches a horizon of 150-200 nautical miles, AMAN captures it, calculates its ETA and inserts it in the sequence along with the others already there.
  • In the ATCC, the TMA supervisor receives and validates the sequence provided by the AMAN and makes the necessary changes as needed.
  • The advisories (Time to lose/Time to gain) that AMAN provides for each aircraft are transmitted to the en-route controllers, which they communicate with the aircraft and apply the appropriate delays or time savings.
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