AN6237 (REV. 1) (NOTICE 1), AIR FORCE - NAVY AERONAUTICAL STANDARD: FILTER ELEMENT - HYDRAULIC REPLACEABLE MICRONIC VENT TYPE (22 JAN 1999)

AN6237 (REV. 1) (NOTICE 1), AIR FORCE - NAVY AERONAUTICAL STANDARD: FILTER ELEMENT - HYDRAULIC REPLACEABLE MICRONIC VENT TYPE (22 JAN 1999)., This notice should be filed in front of AN6237 Rev 1, dated 27 September 1948. AN6237 Rev 1 is inactive for new design and is no longer used, except for replacement purposes.