Aeronautical Information Services - National Flight Data Center (NFDC)

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Third Party Survey System (TPSS)

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Launched in 2005, TPSS automates the submission and processing of Wide Area Augmentation System (WAAS) survey data.

TPSS enables the following workflow:

  • Survey organization uploads UDDF-based survey file.
  • National Geodetic Survey (NGS) validates UDDF file.
  • NFDC Flight Procedures group determines if an impact to existing procedures exists, then may re-design procedure.
  • NFDC specialists update NASR.
  • NFDD and 56-day publications communicate changes.