ASPM: Data Sources and Update Cycle

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Data Source Content Update Cycle Purpose
Traffic Flow Management System (TFMS) Flight level records assembled by combining electronic messages transmitted to the En Route Modernization Automation Modernization (ERAM) system. Data include aircraft ID (flight number or tail number), flight plan times, AZ and DZ times, arrival and departure airport, and aircraft and flight type. Also contains OOOI data for several airlines (starting FY15). Daily update with preliminary next-day TFMS data and enhanced five-day data.

Approximately 10 days after the end of each month, TFMS data for the previous month are finalized.

Source of flight level data for passenger, freight, general aviation, and military flights that have filed a flight plan or otherwise transmitted data to ERAM. Includes scheduled and non-scheduled flights.
ARINC OOOI Data. Updated Daily. Source of actual flight times for ACARS-equipped aircraft for select airlines: AAL, ACA, DAL, SWA, UAL.
CountOps Arrivals and Departure information for individual flights. Also identifies arrival and departure runway end. CountOps includes all flights captured by OPSNET, but CountOps field are only used tu supplement ASPM flights (flights to or from the ASPM77 airports or operated by one of the ASPM carriers. Updated daily. Additional source of On and Off data for flights without OOOI data from TFMS, ARINC, or ASQP.
Innovata A private aviation data provider of carrier flight scchedules. Data were previously obtained from OAG. See FSDS. Updated on the 1st and 3rd Tuesday of each month. Source of schedule data for carriers flying domestic flights and international flights to or from the U.S.
Airline Service Quality Performance (ASQP). Data provided by BTS. Schedule, flight plan, OOOI data, and delay causes as reported by carriers that handle at least 1% of total domestic scheduled passenger service. Monthly file loaded approximately 25 days after the end of the month. ASQP correction files are occasionally submitted several months later, resulting in a reload of ASPM for the affected months. ASPM records are updated with new or revised flight information from ASQP, including OOOI data, final schedule data from the Computer Reservation System (CRS), and carrier reported delay causes.

Unimpeded Taxi Times Unimpeded Taxi Data by airport and carrier. Every year (typically in March), new unimpeded taxi times are calculated based on observed data from the previous year. ASPM is reloaded from December forward to apply the updated taxi times. Used for calculating taxi delays for individual flights.
Operational Information System (OIS) Runway Configuration Data and Arrival and Departure Rate Data. Updated daily for the last 30 days. Used for summary reports of Airport Efficiency by hour and quarter hour.
National Weather Service Airport Weather Data. Weather data are retrieved from three sources: METAR -- published hourly without quality controls; ASOS -- hourly data with some quality controls. Available next day but not current through the end of the prior day; and QCLCD -- quality controlled month-to-date file also not current through the end of the prior day. The month is finalized on the 6th of the following month regardless of it being complete. Therefore, occasionally ASPM does not receive QCLCD data for the last day or two of the month. ASPM uses QCLCD when it is available, followed by ASOS, and then METAR to fill in where the other two sources are not current. For more information see ASPM Weather Processing. Used for Airport Efficiency Daily Weather by Hour report and calculating weather impact in the Weather Factors module.