The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is soliciting proposals for the procurement of a gearbox assembly, specifically designed for aircraft applications. This contract requires the delivery of newly manufactured spares, as refurbished or remanufactured items will not be accepted, emphasizing the critical nature of the components being acquired. The gearbox assembly is classified as a Flight Critical item, necessitating engineering source approval by the Naval Air Systems Command, which underscores its importance in ensuring operational safety and reliability. Interested vendors must submit their proposals, including any necessary source approval requests, to Brett Duffey at brett.duffey@dla.mil by the specified deadline, with further details available through direct contact at 215-737-8600.