NAC is currently performing software updates to the NAC Dynamic Friction Decelerometer (DFD) App in preparation for the 2026–2027 winter operations season. We appreciate your patience and will notify customers when the updated app is available.

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App Update Notice: NAC-Dynamic Decelerometer

Current Availability The NAC-Dynamic Decelerometer App for iOS and Android remains available for download from the App Store and Google Play Store.

Important Update in Progress Neubert Aero Corp. is currently completing a comprehensive update to the NAC-Dynamic Decelerometer App to support recent changes to GPS satellite systems. This critical update will ensure continued accuracy and reliability for all users.

Timeline

  • Target Completion: End of October 2025
  • Availability: Updated app will be released prior to the 2025 Winter Airport Operations season

What This Means for Users

  • Current app versions remain functional and available for download
  • The upcoming update will enhance GPS compatibility and performance
  • No action is required from existing users – the update will be available through normal app store updates

For questions regarding this update or technical support, please contact Neubert Aero Corp. at info@airportnac.com

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Search either App Store for “NAC-DFD” and download.

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THE ONLY EQUIPMENT NEEDED FITS
IN THE PALM OF YOUR HAND

Dynamic Friction Decelerometer®
Mobile App for only $199*.

For winter runway operations only, Version 3. Copyright © 2025 NAC Dynamics, LLC All Rights Reserved. *Subscription price. To Review Downloadable PDF of Scientific Assessment of Mobile Decelerometer Technology for Runway Friction Measurement, please click here

ASTM, ICAO, & FAA APPROVED.

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