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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Number 4 - T-100 Reports

Tuesday, November 28, 2017

Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Alaska Mail Rates
Number 4
Issue Date: August 5, 2004
Effective Date: Immediately


Beginning with the August 2004, segment traffic out of an airport must be equal to or higher than the market traffic out of the same airport. If not, you will be required to correct the error.

Initially, BTS allowed a 3 percent error in market data to pass through edit for use by the U.S. Postal Service for mail tender. When the Alaskan carriers were first required to report T-100 there were many data quality issues. We realized that there was a learning curve to get all carriers up to speed for reporting purposes. Today, carriers have had sufficient time to become proficient in T-100 reporting matters, and we expect "clean" submissions in the future, and we will not routinely accept a three percent error rate beginning with the T-100 reports for the month of August 2004. If we did continue to accept a three percent error factor, it would allow carriers that look for ways "to game the system" to increase their market share for mail tender purposes by three percent. BTS wishes to protect the carriers that make the effort to report correctly.

For the airports that we identified as having more market passengers or freight than segment passengers, you can ignore the airports with less than 3% error prior to August 2004.

Carriers should be aware that over-reporting of traffic leads to lower terminal and line haul charges per enplaned ton and RTM respectively. This is true for both scheduled and nonscheduled service. DOT, the carriers and the USPS are all best served with consistent accurate reporting.

Donald W. Bright signature
Donald W. Bright
Assistant Director 
Airline Information