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The DEPT OF DEFENSE | DEPT OF THE NAVY has issued a Tender notice for the procurement of a F35b Stovl Clutch Cooling System Cleaning Service and Equipment Capability in the USA. This Tender notice was published on 11 Jul 2026 and is scheduled to close on 16 Jul 2026, with an estimated Tender value of Refer Document. Interested bidders can access detailed Tender information, eligibility criteria, and complete bidding documents by referencing TOT Ref No. 144936181, while the tender notice number is N6833526RFI0521 and Registering on the platform.
Procurement Summary
Country: USA
Summary: F35b Stovl Clutch Cooling System Cleaning Service and Equipment Capability
Deadline: 16 Jul 2026
Posting Date: 11 Jul 2026
Other Information
Notice Type: Tender
TOT Ref.No.: 144936181
Document Ref. No.: N6833526RFI0521
Competition: ICB
Financier: Self Financed
Purchaser Ownership: Public
Tender Value: Refer Document
Purchaser's Detail
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Email: Login to see tender_detailsLogin to see details Tender Details Summary Documents
Naval Air Warfare Center Aircraft Division, F-35 Joint Program Office (JPO) has a requirement to provide all necessary equipment, parts, and services to perform onsite cleaning and removal of contamination from the F-35B Short Take-Off and Vertical Landing (STOVL) LiftFan clutch cooling system. The F-35 Joint Program Office Propulsion Support Equipment Sustainment Manager is taking priority action to secure expeditious support to perform F-35 clutch cooling system process and equipment capability trials conjointly with F-35 JPO Propulsion LST In-Service Engineering.
Background
The F-35B STOVL variant utilizes a clutch cooling system to manage heat and debris generated during clutch engagement. A mixture of carbon fiber dust and synthetic oil ("clutch sludge") accumulates within the clutch cooling exhaust ductwork and vent panel screens. This RFI seeks to identify qualified industry sources capable of meeting the below specifications and salient characteristics.
Contractor Services & Equipment
The contractor shall be contracted by the USG to perform onsite services using their Commercial Off-the-Shelf (COTS) cleaning system solution. This system must be modified to support initial JPO Engineering F-35B clutch cooling duct & vent cleaning equipment and process evaluations.
Oversight
Technical oversight authority of the testing and evaluation processes fall under the auspices of F-35 JPO Propulsion LST In-Service Engineering.
Salient Characteristics / Specifications
The cleaning system and associated services must provide a comprehensive solution to remove clutch sludge contamination. Capabilities must meet the following specifications:
• System Function: A deployable, on-site cleaning solution designed to remove hardened “clutch sludge” from the interior of the F-35B clutch cooling exhaust ductwork and vent/screen holes.
• Cleaning Process: Control water temperature, pressure, and quality to clean without damaging aircraft comp...
Notice ID: n6833526rfi0521
Department/Ind. Agency: dept of defense
Sub-tier: dept of the navy
Office: navair warfare ctr aircraft div
Product Service Code: j019 - maint/repair/rebuild of equipment- ships, small craft, pontoons, and floating docks
NAICS Code: 488190 - Other Support Activities for Air Transportation
Inactive Dates: jul 31, 2026
Inactive Policy: 15 days after response date
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