The “AMS 1435 Liquid runway de-icing/anti-icing product” standard, developed by the Society of Automotive Engineers (SAE), describes the requirements for liquid de-icing and anti-icing materials.
This specification covers runway de-icing and anti-icing products in liquid form. Unless otherwise stated, all specifications referenced herein are of the latest (current) revision.
This standard specifies a potassium acetate-based deicing or anti-icing liquid in concentrated liquid form that meets the liquid specification. The liquid must be at least 50 percent potassium acetate by weight and have a freezing point of -57°C or lower (method ASTM D1177). The liquid must not contain urea, ethylene, or propylene glycol.
The supplier must provide the name and location of the fluid production facility and a copy of the fluid's independent laboratory certification against AMS 1435. The certification must be issued within 24 months of the bid submission. If the fluid is produced by a licensee or subcontractor, all testing must be performed on the fluid produced at the facility as if the fluid were initially qualified.
The liquid density should be 1,28 kg/l at 20 degrees and the pH value should be between 10,5 and 11,5.
The supplier must provide a complete acute aquatic toxicity test report for the liquid. This report must be prepared by an independent party. The supplier must provide a report on the biochemical oxygen demand and theoretical total oxygen demand of the liquid.
In the aerospace industry, safety and efficiency extend far beyond engines and avionics. SAE AMS1435 is a standard covering liquid runway de-icing and anti-icing fluids used on airport pavements such as runways and taxiways. This standard specifies material requirements, test methods, performance criteria, and compliance expectations for the fluids.
This standard specifies product composition and performance, including permitted chemicals (typically glycol-based), freezing point thresholds, corrosion inhibitors, glycerol alternatives, and low-temperature performance. Mandatory tests include sandwich corrosion, cyclic immersion of cadmium plate samples, and compatibility with carbon brake materials and aircraft metals.
Glycol-based formulations should contain inhibitors to reduce fire/exothermic risks when the fluids come into contact with poorly insulated electrical circuits. Airport lighting and piping systems may be affected if deicer gets into them, requiring operational considerations.
SAE standards that support the use of the AMS 1435 standard are:
In short, the AS6170 standard measures the ice melt rate over time for AMS 1435 products. The AS6172 standard measures the ice undercutting rate for runway de-icing/anti-icing products.
Manufacturers rely on AMS 1435 standard test methods for product adequacy and consistency. Airport operators and regulators use this system to evaluate suppliers and ensure safe and effective deicing/prevention during winter operations.
This standard mandates rigorous testing for corrosion resistance, ice melting/undercutting effectiveness, and safety in electrical systems. The AS6170 and AS6172 test methods serve as complementary standards for measuring performance under laboratory conditions. Users should avoid mixing incompatible products and ensure that diluted solutions still meet all specifications.
Compatibility testing is critical to ensuring that liquids do not damage airport infrastructure or aircraft materials. Key tests required include:
These tests ensure that deicers are safe for infrastructure, aircraft coatings, plastics, brakes and runway surfaces.
Our organization, which has been supporting businesses across all sectors for years through a wide range of testing, measurement, analysis, and evaluation activities, has a strong team of employees who closely follow global developments in science and technology and are constantly improving themselves. In this context, we also provide testing services to businesses in accordance with the "AMS 1435 Liquid Runway De-Icing/Anti-Icing Product" standard.
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