This International Standard establishes a scheme for the mark-ing of components (other than pipelines, hoses and fittings) used in aircraft hydraulic systems, so that the correct type of fluid is readily apparent during any assembly or testing opera-tions in workshops. The marking is not intended to serve any purpose when a component is installed in an aircraft.
NOTE — The requirements for the marking of pipelines and hoses in aerospace vehicles to indicate the type of fluid for which they are ap-proved are given in ISO 12.