National Stock Number
6610-00-515-6221
National Stock Number (NSN) 6610-00-515-6221, or NIIN 005156221, (indicator,vertical velocity) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 005156221 was cancelled on June 21, 2013, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 6610006634162. This NSN replaces 2 stock numbers: 6610006637524, 6610006637551.
There is only one manufacturer part number associated with this NSN. One of those 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, there are no suppliers that 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) 03448. [AN INDICATOR WHICH INDICATES THE RATE OF AN AIRCRAFT'S ASCENT OR DESCENT.]. 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 6610005156221 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.