The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is seeking sources for the procurement of a heat exchanger, specifically under the title "1660 - PAO Heat Exchanger." This opportunity falls under the NAICS code 336413, which pertains to Other Aircraft Parts and Auxiliary Equipment Manufacturing, and involves the provision of aircraft air conditioning, heating, and pressurizing equipment. The heat exchanger is critical for maintaining operational efficiency and comfort in military aircraft. Interested parties are encouraged to reach out to Joseph Lewis at 215-737-9462 or via email at joseph.lewis@dla.mil for further details regarding this sources sought notice.