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  • last update December 14, 2023
STC Thrush S2R-T34, S2R-H80
  • Trush S2R "The Beast" with Avia Propeller V508H
  • Trush S2R "The Beast" with Avia Propeller V508H

STC - Data


  • FAA STC: SA02718SE (issued September 15, 2021)

  • STC Holder:
  • Cascade Aircraft Conversions, LLC
  • 903 Grinnell Road
  • Garfield, WA 99130

  • Applicable Aircraft: Thrush S2R-T34 & S2R-H80 with or without DC
  • Engines:Pratt and Whitney PT6A-140AG
  • Propeller: V508H/108B/A


  • Advantages:
  • Our propellers bring you the unique solution of removable blades. Shipping and storage of such a propeller is much easier and cheaper compared to the fixed blade option.
  • Our blades are made of durable high quality aluminum alloy designed for propeller blades.
  • No propeller ADs
  • TBO 2500 hours or 6 years, whatever comes first, for low maintenance costs
  • No intermediate inspections on an agriculture installation
  • No intermediate inspections are needed between the TBO which requires the propeller removal
  • Reduced cost for spare parts, like blades and lower overhaul costs, for the complete propeller assembly
  • No rpm restriction for the complete operational range