National Stock Number
6610-99-891-9990
National Stock Number (NSN) 6610-99-891-9990, or NIIN 998919990, (computer,air data) has an unknown assigned date. This NSN does not replace any other NSNs.
There is only one manufacturer part number 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) 30742. [A COMPUTER SPECIFICALLY DESIGNED TO CONVERT BASIC AIR DATA INPUT SIGNALS INTO ELECTRICAL OUTPUT SIGNALS REPRESENTING THE NECESSARY FLIGHT PARAMETERS SUCH AS PRESSURE ALTITUDE, MACH NUMBER, AIRSPEED, AND IMPACT PRESSURE. SEE ALSO COMPUTER, AIR SPEED; COMPUTER, ALTIMETER-PRESSURE; COMPUTER, ALTITUDE; COMPUTER, MACH NUMBER; COMPUTER, PRESSURE-ALTITUDE; COMPUTER, TRUE WIND DIRECTION AND INTENSITY; AND COMPUTER, ZONE WIND.].
This information was last updated on Oct 20, 2025.