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The United States Air Force through Air Force Sustainment Center (AFSC), Tinker AFB 73145 is contemplating the Engineering Services to resolve currently known and anticipated unknown obsolescence issu... The United States Air Force through Air Force Sustainment Center (AFSC), Tinker AFB 73145 is contemplating the Engineering Services to resolve currently known and anticipated unknown obsolescence issues related to the B-2 Fuel Vent Control Valve. The Government intends to issue a solicitation on or about 29 December 2021 with a closing response date of 28 January 2022 and estimated award date of on or about 30 September 2022. This notice does not in itself represent the issuance of a formal request for proposal and is not intended to be taken as such. **These dates are subject to change. Closing/response date will be noted on the solicitation. ** The requirements set forth in this notice are defined per Purchase Request FD2030-22-00017 as follows: Written response is required. NAICS: 541330 – Engineering Services RMC/RMSC: N/A NSN: 4810-01-380-9046FW P/N: 2880001-105 Total Line Item Quantity: CLIN 0001: Engineering Services CLIN 0002: Valve Assembly, Repair/Technical Order Validation CLIN 0003: Data, In accordance with Contract Data Requirements Lists and Performance Work Statement (Not Separately Priced) Item: B2 Fuel Vent Control Valve Description: The B-2 Fuel Vent Valve consists of dual five-inch diameter butterfly valves. Each valve is independently controlled by a transducer/controller/motor combination. When the valve is commanded, each controller sets the vane angle of the valve it controls, independently of the other control unit. The two independent differential pressure transducers, share a common pressure port in the top of the valve. The other port is remote from the valve and extends from the valve to the fuel surge tank. Each vane in the valve is controlled by a separate actuator and controller circuit board. Power is supplied by two independent sources and the vent control valve operates on 28 VDC. It maintains pressures at 5.5 to 6.0 psi positive and 0.7 to 1.2 psi negative. Duration of Contract Period: 36 Months Destination: Tinker Air Force Base, Oklahoma City, Oklahoma 73145 United States Delivery: To be cited in Solicitation Data Line Item and attachments Qualification Requirements QUALIFICATION REQUIREMENTS DO NOT APPLY. Current Approve Source(s) include: This is a sole source requirement to approved Large Business: NORTHROP GRUMMAN SYSTEMS CORPORATION CAGE CODE: 5FVX5 Set-aside: No Set-asides applicable Export Control: Not Applicable. Applicable Tech Orders: The Government does not own applicable technical orders or data rights for this item. OMBUDSMAN (AUG 2005) (An Ombudsman has been appointed to hear concerns from offerors or potential offerors during the proposal development phase of this acquisition). The purpose of the Ombudsman is not to diminish the authority of the program director or contracting officer, but to communicate contractor concerns, issues, disagreements, and recommendations to the appropriate government personnel. When requested, the Ombudsman will maintain strict confidentiality as to source of the concern. The Ombudsman does not participate in the evaluation of proposals or in the source selection process. Interested parties are invited to call the Ombudsman at 405-736-3273. DO NOT CALL THIS NUMBER FOR SOLICITATION REQUESTS. Electronic procedures will be used for this solicitation. No telephone requests. Only written or emailed requests received directly from the requestor are acceptable. Point of Contact: David O’Rourke; email: david.orourke@us.af.mil