This document defines the technical guidelines for the safe integration, operation and maintenance, and for certification of Liquid Hydrogen Storage Systems (LHSS) in aircraft. This document also defines guidelines for safe refueling operation of hydrogen for aircraft. This document does not address airport infrastructure, nor how the refueling means is specified, except the provisions required for the safety of the aircraft refueling operation.
Work in progress; initiated Nov. 2019. Available at https://www.sae.org/standards/content/as6679/