National Stock Number
4920-99-126-5454
National Stock Number (NSN) 4920-99-126-5454, or NIIN 991265454, (test set,environmental control system,aircraft) has an unknown assigned date. This NSN does not replace any other NSNs.
There are 2 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 one supplier. Today, one supplier is listed as an Active supplier 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) 41644. [A TEST SET DESIGNED TO MAKE EXAMINATIONS OF ENVIRONMENTAL CONTROL SYSTEMS SUCH AS AIR CONDITIONING, HEATING, PRESSURIZATION, AND THE LIKE, WHICH AFFECT THE INTERIOR OF AN AIRCRAFT.].
This information was last updated on May 28, 2025.