DLA Aviation is conducting market research through a Sources Sought Notice to identify companies capable of manufacturing or legitimately obtaining five specified aircraft hydraulic/fuel components currently produced by Hydro-Aire Aerospace and Northrop Grumman. The items are a fuel inlet adapter, centrifugal pump impeller, hydraulic fluid tank piston, high-pressure bootstrap reservoir tube, and overhaul valve parts kit, each tied to specific NSNs, OEM part numbers, and weapon system designator codes. This notice is informational only, is not a solicitation or request for offers, and does not obligate the government to award a contract. No funds are available to pay for response preparation, and submitted information is voluntary. Firms seeking approval as an approved source must submit a Source Approval Request package demonstrating they can manufacture the items to equal or better quality than the currently approved products.