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TKS deicing fluid AL-5 D.T.D.406B

Aero-Sense is one of the leading European producers and providers of TKS fluid for in-flight de-icing. Each batch is carefully analyzed so that viscosity, freezing point, pH value and many other parameters are respected. Before packaging, the fluid is filtered down to 0,5 micron to prevent debris blocking the laser drilled titanium leading edges.

  Technical sheet TKS fluid AL-5 DTD406B

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Additional Information

  • Appearance at 20°C: Liquid, colourless
  • Odour: Characteristic
  • pH value: 6 - 7,5
  • Specific gravity: 1,092 - 1,097
  • Viscosity (20°C): 11 - 13 mm²/s
  • Flash point (°C): > 60°C
  • Freezing point (°C): < -60°C
  • Brand Aero-Sense
    Certification British Joint Service Designation AL-5 - British Military Specification D.T.D.406B - NATO Code S-745
  • To be used in TKS deicing systems according the POH.
  • Can also be used for ground deicing of aircrafts.
  • Safety
  • Review the Material Safety Data Sheet before use.
  • Shelf life: 36 months
  • Versions
    • 5 liter can (4 x 5 liter)
    • 10 liter can
    • 20 liter can
    • 200 liter barrel

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    General Information


    How does a TKS system fight in-flight icing?

    A TKS system uses a TKS liquid based on ethylene glycol to coat the surface and prevent ice from accumulating. The leading edges of the wings, horizontal and vertical stabilizer are made of laser-drilled titanium panels, through which the fluid is pumped during in-flight icing conditions. A "slinger ring" may be used to distribute fluid on propellers, and a spray bar can be used to apply fluid to the windshield. The TKS fluid mixes with the ice accretion, depresses its freezing point, and allows the mixture to flow off the aircraft without freezing

    What are the advantages of the TKS system?

    • Works for de-icing and anti-icing (curative and preventive for icing)
    • High performance : the fluid runback provides total airframe ice protection
    • Ease to use

    What are the disadvantages of the TKS system?

    Ice protection is limited to the amount of fluid (one to three hours of continuous ice protection is possible with a full tank of TKS fluid, depending on the specific system)