The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is seeking proposals for the procurement of 13 units of the Lever Assembly, Axle, identified by NSN 7R-1620-014553630-QE and reference number 74A400900-1003. This procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that only approved sources with unique design capabilities and manufacturing knowledge may participate. Interested vendors must submit detailed information for source approval alongside their proposals, as the government intends to negotiate with only one source under FAR 6.302-1. For inquiries, contact Brian Blanco at (215) 737-6795 or via email at BRIAN.BLANCO@DLA.MIL, with proposals due within 45 days of this notice.