DF Decade box.pdf

This is a Determination and Findings document for a sole source acquisition by the United States Air Force, 35th Contracting Squadron/Procurement KB (USAF). The contracting activity seeks to purchase a Decade Resistance Box, model HARS-LX-9-0.001, manufactured exclusively by IET Labs, Inc. to support calibration operations for various assets including H301-4 ECS Testers, SST units, and Voltage Detectors used in 35 Fighter Wing flying programs. The equipment being procured replaces previously utilized RS925/RS925D units that were manufactured by ESI and is now obsolete.

The acquisition is justified as a single-source procurement under RFO 12.102(a) (Commercial Products and Services) based on findings that only one source is available to meet the Government's minimum specifications. The contracting officer has determined that the particular brand and model are essential to the Government's requirements, as market research indicates that other companies' similar products or products lacking the particular features do not meet the agency's needs or cannot be modified to meet minimum requirements. The Contracting Officer, Michiko Yoshizawa, approved this determination on August 4, 2026, with delegated signatory authority under applicable Federal Acquisition Regulation and Defense Acquisition Regulation Supplement provisions for commercial item orders.