The Request/Reply service provides access to all TFMS Services for data requests and for TMI creation and management.  The user makes a “request” to TFMS via this service, and TFMS provides a “reply” back to the user via this service.  This service also provides the mechanism for Operators to submit surface and terminal data to TFMS in support of the FAA’s TFDM (Terminal Flight Data Manager) system and future enhancements to improve departure time predictions, flight trajectories and demand predictions.

Request/Reply capabilities include messages to:

• update/delete/model/monitor Traffic Management Initiatives (TMI)
• interact with TFMS in support of the TMI (CDM and Flight Operator System (FOS) services)
• control the Schedule Database
• issue Estimated Departure Clearance Time (EDCT) commands
• resynchronize TMI definitions and associated flight lists
• submit surface and terminal data
• and more….

There is also useful information in the presentation slides from the “TFMS Developer Workshop”.  The focus of this workshop was on developing TFMData interfaces with the Request/Reply service and the Terminal Flight Data service.

TFMS Developer Workshop

Refer to the following for the high-level layout of the Request/Reply schema:

For a detailed example of the TOS message in TFMData format, see Example Trajectory Option Set (TOS) Request to TFMS via Request/Reply..

Monitoring airport demand can be accomplished using the TFMData Service TFMSRequestReply function to generate a flight list.  Subsequent to the reply, the flight list can be dynamically maintained using the Flow Information function. Click here for details on airport monitoring.

• For Flight Data packets in TFMData format, see Example Flight Data (FD) block requests to TFMS via Request/Reply.
• For Simplified Substitution packets in TFMData format, see Example Simplified Substitution (SS) block requests to TFMS via Request/Reply .
• For Early Intent packets in TFMData format, see Example Early Intent (EI) requests to TFMS via Request/Reply .

Submitting Terminal Flight Data to TFMS can be accomplished using the TFMData Service TFMSRequestReply function, see Submitting Terminal Flight Data to TFMS via Request/Reply.

TFMData Service provides the capability to request the definition and flight list for a specific TMI via the Request/Reply message as detailed in Request TMI Definition/Flight List via Request/Reply.

TFMData Service provides the capability to request a complete list of TMIs via the Request/Reply message as detailed in Request Current Traffic Management Initiatives (TMIs) in TFMS.