ISO 5859:1991, Aerospace - Graphic symbols for schematic drawings of hydraulic and pneumatic systems and components

The requirements for the symbols are specified in SAE AS 1290A which is adopted as a de facto ISO International Standard. For the purposes of international standardization, the amendments listed in table 1 shall apply to the specific clauses of AS 1290A noted under "Reference". This title may contain less than 24 pages of technical content.