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T100(f) Foreign Air Carrier Traffic Data Reporting

The U.S. Department of Transportation (DOT) maintains the Air Carrier Statistics database (T-100) which consolidates the information about the movement of passengers and freight on commercial flights within the U.S. and between U.S. and other foreign countries. US based commercial aircraft operators report monthly traffic information using the Form T-100 while foreign commercial aircraft operators must submit monthly segment and market data using Form T-100(f).


What are Segment and Market Data?

Segment data includes passenger and freight information for each leg of a flight from one point to another. One of the two points can even be an airport following an unscheduled landing after a diversion or emergency, to pick up other passengers or refuel the aircraft. Nonstop segment data are not specifically tied to flight numbers and are referred to as "transported data".

For example, for route A-B-C-D, we identify three nonstop segments (or legs): A-B, B-C and C-D.

On the other hand, market data encompasses details on passengers and freight between two airports, irrespective of the number of stops made along the route. This data is linked to specific flight numbers and is commonly known as "enplanement data".

For example, for route A-B-C-D, we identify six (on-flight) market data pairs: A-B, A-C, A-D, B-C, B-D and C-D.


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Who Must Report and What Needs to be Reported?

Commercial aircraft operators from outside the US, who have received DOT authorization to carry passengers and/or cargo to and from the United States, are required to report the number of revenue passengers and freight (expressed in kilograms) for each nonstop segment and on-flight market.

Revenue passengers refer to individuals who are transported for compensation. This category excludes:

  • Individuals traveling for free or under token charges
  • Persons flying at a fare or discount available only to employees, authorized persons, or those traveling for business purposes
  • Infants not occupying their own seats.


The T100(f) report must include the following information:

  • Carrier code assigned by DOT
  • Report date using the format YYYYMM
  • IATA code of the origin airport
  • IATA code of the destination airport
  • Service class codes which can be any of the following:
    • F - Scheduled Passenger/cargo Service
    • G - Scheduled All-cargo Service
    • L - Nonscheduled Civilian Passenger/Cargo Charter
    • P- Nonscheduled Civilian All-Cargo Charter
    • Q - Nonscheduled Services (Other than Charter)
  • Number of revenue passengers (transported per segment and enplaned per market)
  • Revenue freight (transported per segment and enplaned per market)
  • Available seats
  • Available capacity


Obligations for Foreign Commercial Aircraft Operators

Foreign commercial aircraft operators must:

  • register with the Department of Transportation (DOT)
  • submit the T-100(f) form in CSV format no later than 30 days after the close of the month being reported on
  • submit a letter signed by an officer, in PDF format, to confirm the validity and accuracy of the T-100(f) filing
  • keep T100 traffic data reports for 3 years.



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