This procurement is for 48 axial piston pump units (NSN 4320-00-174-5811) for the C-130 aircraft, with delivery required to Tinker AFB, OK, on or before August 6, 2026. The contractor must be an approved source, with Eaton Aerospace listed as a qualified source. The Government does not own the technical data needed for manufacture, so interested firms must contact the OEM. The notice states this is not a request for competition, as the Government intends to negotiate with only one or a limited number of sources.