NAC-Dynamic Friction Decelerometer w/ Vehicle RAM mount Brackets and Protective Pelican Static Case

NAC's Electronic Decelerometer™, Dynamic Friction Decelerometer is used for runway braking action testing and provides greater accuracy than traditional devices. Complies with FAA/ICAO/CAA/ASTM performance specifications.

NAC-Dynamic Friction Decelerometer™ (DFD)

Electronic Decelerometer - Runway Surface Braking Action


NAC's Dynamic Friction Decelerometer™ (DFD) is an electronic 3-axis device used to “spot-check” a contaminated surface during winter runway operations. The DFD's software program records vehicle braking values by measuring the “g” force, or lock-wheel braking action, when the vehicle operator completes a qualified test. This easy-to-use 1.2 Version DFD software program automatically creates the final report of the runway thirds, “touchdown”, “midfield”, “rollout”. Operators can then select from a list of 14 different contaminate types used within the NOTAM reporting system to provide a detailed report of the conditions. NAC's DFD connects to any mobile data PC device (not included) and has a 2-year manufacturer's warranty.  NAC-DFD™ mounts in a USDOT approved vehicle [IAW ASTM Standard E2101].


  • NAC Electronic Dynamic Friction Decelerometer (DFD)
  • RAM Mount Aluminum one (1) inch ball, 2.5 inch plate with 1.0 inch ball
  • RAM Mount Aluminum rectangular 2"x2.5" plate with 1.0 inch ball
  • RAM Mount Aluminum 1.75 inch short length dual 1.0 inch socket arm
  • Pelican rugged protective static impact carry case (YELLOW)

Minimum purchase quantity is one (1), for quantities greater than five (5) please contact our customer service team.
Customers who bought this item also bought

NAC-Dynamic Friction Decelerometer® Mobile App for Android™

NAC-Dynamic Friction Decelerometer® (NAC-DFD) is FAA approved for testing braking conditions on runways.