Two Australian companies, AMSL Aero and Stralis Aircraft, have achieved a milestone by registering a family of liquid hydrogen tanks aimed at enabling zero-emission flights. Referred to as Dewar vessels, these tanks function like supersized thermos flasks, maintaining super-cold liquid hydrogen through vacuum insulation. BOC Australia spearheaded the registration process to support Australia's inaugural liquid hydrogen flight test programs, marking a notable advancement in the country's aviation sector. The 30 kg capacity Dewars, the first of this size in Australia, will facilitate the transportation of liquid hydrogen from production facilities to the aircraft of AMSL Aero and Stralis Aircraft. Simon Coburn, a Hydrogen Systems Engineer at AMSL Aero, highlighted the growing global consensus on liquid hydrogen as an aviation fuel, emphasizing the collaboration between AMSL Aero, BOC, and Stralis in establishing a sustainable liquid hydrogen supply chain for Australian aviation. This development underscores a positive shift towards eco-friendly practices in the aviation industry, reflecting a broader commitment to environmental sustainability in technology and innovation.