The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, is soliciting proposals for the procurement of auxiliary power units (APUs) under the title "28--POWER UNIT, AUX, AIRC." The contract requires the delivery of newly manufactured spares, adhering to stringent quality control standards, including ISO 9001 or higher, and compliance with various military specifications and clauses. These power units are critical components for military aircraft operations, ensuring reliability and performance in demanding environments. Interested vendors must provide proof of being an authorized distributor of the original manufacturer's item and submit their proposals to the primary contact, Carissa Maddalo, via email at CARISSA.MADDALO@DLA.MIL, with a focus on meeting the outlined quality assurance and inspection requirements.