This is an active Department of Defense presolicitation notice (Notice ID SPRPA127RWA15) issued by DLA Aviation at Philadelphia, PA, announcing the intent to procure five (5) units of an APU Generator, identified by NSN 7R-2925-200088875-P8 and reference number 28B545-9, with delivery FOB Origin. The item is a commercial/nondevelopmental/off-the-shelf part that is flight critical, so the Government intends to solicit and negotiate with only one source under FAR 6.302-1, and only Government-approved sources have been solicited; prospective offerors who are not approved sources must submit the documentation detailed in the NAVSUP Weapon Systems Support Source Approval Information Brochures with their proposal. The notice is not a request for competitive proposals, but all responsible sources may submit interest, capability statements, or proposals; responses are due by November 17, 2026 11:00 pm EST, and inquiries go to Michael Offenbacker at MICHAEL.OFFENBACKER@DLA.MIL, (215) 737-0466.