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SAE ARP5891A

M00011204

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SAE ARP5891A Achieving Cleanliness Standards for Aircraft Hydraulic Systems During Manufacture

standard by SAE International, 11/14/2022

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This SAE Aerospace Recommended Practice (ARP) provides processes for achieving the required cleanliness standards during the fabrication, assembly, and functional test of aircraft hydraulic systems. It covers exclusion and removal of solid and liquid contaminants from tubing during manufacture and final assembly, flushing of the installed system, and final checks to ensure cleanliness requirements are met.