NAVAIR PMA-265 intends to solicit Lockheed Martin for a contract modification supporting DMSRB Case I029, a life-of-type buy for an anticipated 543 units of the original Resolver-to-Digital Converter Hybrid Integrated Circuits (P/N 717405153-001 / SD-14623FS-612). The component is critical to maintaining production and long-term sustainment of the Infrared Search and Track (IRST) Block II system. This is an informational sources-sought notice, not a request for proposal, and is being used to assess potential eligible small and other-than-small businesses capable of providing the described supplies/services prior to determining the acquisition method. Interested parties may submit a capability statement of no more than 10 pages by email demonstrating relevant ability, including company/business-size/socioeconomic information, joint-venture eligibility, potential subcontracting possibilities, and points of contact; no phone inquiries will be entertained. Responses must be marked as specified CUI, must not include classified material, and foreign concerns or U.S. respondents with foreign team members/partners must comply with ITAR.