TFMData Service FAQ

These are frequently asked questions about the TFMS TFMData Service. The questions are grouped by the categories shown below. Click on a question to view the answer.

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TFMData Service – General

What is the TFMData Service?

The TFMData Service is a Traffic Flow Management System (TFMS)
service that provides TFM data to internal and external users via the National
Airspace System (NAS) Enterprise Messaging Service (NEMS) Enterprise Service
Bus (ESB).

What functions are available in the TFMData Service?

  • Flight Data
  • International Data
  • Terminal Flight Data
  • TFMS Request Reply
  • Flow Information
  • TFMS Status
  • How can I obtain documentation about the TFMData Service?

    The TFMData Service JMSDD and XSD documentation can be obtained from the NSRR.

    To access the TFMData Service documentation from NSRR 2.0:

    1. Login to NSRR 2.0 at https://nsrr.faa.gov
      (If you don’t already have NSRR 2.0 access, new accounts can be requested here)
    2. In the “SEARCH” pulldown, select “SEARCH DOCUMENTS”
    3. Enter the following search terms, and then click “Search”:
      +tfmdata   +schema   -outdated
    4. In the Results list, click on the desired document to view or save:
      - For R13:   TFMDataService-v2.0.5.zip
      - For R10:   TFMDataService-v1.9.zip
      Note:  The zip file contains all TFMData Service documents (JMSDD/WSDD and XSD)

    TFMData Service – Request/Reply

    How is a Trajectory Option Set (TOS) submitted via Request/Reply?

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

    How do I monitor departures and/or arrivals for an airport?

    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.

    Where can examples of Flight Data, Simplified Substitution and Early Intent Packets in TFMData format be found?

    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 .

    How do I submit terminal flight data using request reply interface?

    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.

    How do I submit a request for a specific TMI Flight List?

    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   

    .

    How do I submit a request for a list of all TMIs currently in TFMS?

    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   

    TFMData Service – Flight Data

    Is the Flight Data feed data delayed?

    TFMS publishes all Flight Data to NEMS in real time with no delay. Any delay in the published data is a function of your subscription with NEMS to consume the data.

    TFMData Service – Flow Information

    What type of information is available over the Flow Information feed?

    The Flow Information feed contains primarily information regarding TFMS Traffic Management Initiatives(TMIs). The TMIs include FXAs,
    Reroutes, Ground Stops, Ground Delay Programs and CTOPs and more. The information about these TMIs includes the initial TMI
    definition, any subsequent modifications and the flight data for the TMI. See Example Flow Information Data Feed Messages
    for detailed examples.

    TFMData Service – International

    Are flight messages batched in the International data feed?

    No, each JMS message contains one flight data message.  This differs from the Flight Data feed where the messages are batched.

    TFMData Service – TFDM

    TFMData Service – TFMS Status