National Stock Number
6615-00-556-1979
National Stock Number (NSN) 6615-00-556-1979, or NIIN 005561979, (control,altitude,automatic pilot) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 005561979 was cancelled on December 16, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 16198. [A CONTROL DESIGNED WITH AN AIRTIGHT CASE, CONSISTING OF A BELLOWS OR DIAPHRAGM WHICH RESPONDS TO CHANGES IN BAROMETRIC PRESSURE AND IS USED IN CONJUNCTION WITH AN AUTOMATIC PILOT TO MAINTAIN A DESIRED ALTITUDE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6615005561979 does not contain precious metals.
This information was last updated on Jul 01, 2025.