National Stock Number
6340-01-455-9721
National Stock Number (NSN) 6340-01-455-9721, or NIIN 014559721, (computer,warning,ground proximity) was assigned May 22, 1998 in the Federal Logistics Information System (FLIS). NIIN 014559721 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 5 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 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) 53040. [A COMPUTER PREPROGRAMMED TO DETERMINE THE DISTANCE OF AN AIRCRAFT FROM THE SURFACE OF THE EARTH AND WARN THE PILOT WITH AN AUDIBLE ALARM. SEE ALSO COMPUTER, TERRAIN CLEARANCE.]. 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 6340014559721 does not contain precious metals.
This information was last updated on Aug 01, 2025.