The Defense Logistics Agency (DLA) is conducting a market survey to identify sources capable of supplying spare parts for the ASN-128 Doppler Navigation System, originally developed by BAE Systems. The procurement includes various electronic components that must integrate with existing system configurations, with the government lacking detailed specifications or technical data packages for these parts. This initiative is crucial for maintaining operational readiness of the navigation system, and interested manufacturers are encouraged to submit their capabilities, including relevant documentation, by December 24, 2025. For inquiries, potential respondents can contact Mark Colangelo at mark.w.colangelo.ctr@army.mil or Acia Sands at acia.c.sands.civ@army.mil.