The Department of Defense, specifically the Department of the Air Force, is conducting a market survey to identify potential contractors capable of providing sustaining engineering services for the Helicopter Program Office (HPO) related to the Aircraft Structural Integrity Program (ASIP), Mechanical Equipment and Subsystems Integrity Program (MECSIP), Avionics Integrity Program (AVIP), and Electrical Wiring Interconnect System (EWIS) for various helicopter models including the HH-60W, MH-139A, TH-1H, and UH-1N. Contractors are expected to demonstrate expertise in rotary-wing structures, mechanical and avionics systems, fatigue analysis, non-destructive inspection, and software development, particularly concerning specific tasks outlined in relevant military standards. This opportunity is crucial for maintaining the operational integrity and safety of the helicopter fleets, and responses to the Request for Information (RFI) are due by January 7, 2026. Interested parties should direct inquiries to Casey Price at casey.price.3@us.af.mil or Jeanette Jordan at jeanette.jordan.2@us.af.mil.