The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is seeking qualified sources for the procurement of 63 units of the Servocylinder Assembly, identified by NSN 7R-1650-014552590-QE and reference number 41010230-103. This procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that only approved sources may submit proposals, as the technical data necessary for full and open competition is not adequately available. Interested vendors must provide detailed documentation as outlined in the NAVSUP Weapon Systems Support Source Approval Information Brochures, and proposals must be submitted to Mary S. Lindsay at DLA by email at MARY.LINDSAY@DLA.MIL, with the understanding that the approval process for new sources may affect the timeline for contract award.