National Stock Number
1650-00-497-7552
National Stock Number (NSN) 1650-00-497-7552, or NIIN 004977552, (separator,oil,aircraft vacuum system) has an unknown assigned date. NIIN 004977552 was cancelled on June 2, 1990, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 08418. [A DEVICE DESIGNED FOR USE IN AIRCRAFT TO PREVENT ATOMIZED PARTICLES OF OIL FROM ENTERING THE VACUUM SYSTEM AND TO RETURN IT TO THE ENGINE OIL SYSTEM. IT MAY ALSO DISCHARGE AIR FROM THE ENGINE DRIVEN AIR PUMPS, OVERBOARD WHEN THE DE-ICING SYSTEM IS NOT IN USE. EXCLUDES:SEPARATOR, OIL.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1650004977552 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.