C-5 MLG Trunnion Bearing

Form / Attachment / Pricing Sheet

This document is a technical drawing (Figure 217) illustrating the Main Landing Gear Complete assembly, Sheet 1 of 7, for Technical Order (TO) 1C-5M-4-1.

• The drawing provides a detailed schematic of the main landing gear.
• Various components are labeled with letters (A, B, C, D, E, F, H, J) and numbers (25, 30, 115, 116, 117, 118).
• A note specifies that the "LH AFT GEAR SHOWN, ON FWD GEAR A IS AFT CIS FWD."

This drawing is crucial for bidders to understand the physical configuration and components of the main landing gear system. It serves as a visual reference for any work or parts related to this assembly within the opportunity.

Solicitation / RFP / RFQ

This document outlines the source pre-qualification requirements for the C-5 MLG Trunnion Bearing (NSN 3120-00-766-2056, Part Number 4F23832-103A). The purpose is to ensure the quality and integrity of this critical aircraft component. Alternative sources must undergo a pre-qualification process.

• Item Identification: C-5 MLG Trunnion Bearing.

• Justification: This spherical, self-aligning, and self-lubricating bearing is critical for attaching the Main Landing Gear (MLG) trunnion to the aircraft. Failure could result in a hazardous situation.

• Qualification Requirements:

  • Demonstrate ability to manufacture and install the bearing into assembly 4F90004-101A and pass performance requirements per LMCO drawing 4F90004.
  • Provide a detailed quality plan implementing ISO 9002 (or equivalent).
  • Submit a detailed re-manufacturing plan including traceability, material source identification, and in-house process documentation.
  • Perform a minimum of 75% of the re-manufacturing workload in-house.
  • Any changes to approved processes, vendor sources, or quality procedures require approval.
  • Conditional approval may be granted upon SAR submittal, with full pre-qualification status granted after passing a one-time first article test.

• Waiver: Companies already pre-qualified are exempt (RBC Aerospace Bearings Inc. and Sargent Aerospace and Defense, LLC are listed as currently qualified).

• Consideration: Offerors with quality issues may not be qualified. Those with similar commercial items must provide brochures and references.

• Not explicitly stated in this document, but it pertains to a government contract for the C-5 MLG Trunnion Bearing.

• Submission: Responses must be received electronically via DoD SAFE by close of business March 2nd, 2026.

• Evaluation: Potential offerors will be evaluated based on their ability to meet the qualification requirements. The Air Force may not qualify offerors with past quality problems.

• Not explicitly stated, but the process is for becoming a qualified offeror.

• All costs related to pre-qualification are the applicant's responsibility.

• The Government Point of Contact for technical requirements is AFLCMC/WLSEAB at Robins AFB, GA.

• Responses should be sent to Karen Beckford, Yohanes Tendean, and Jessica Grinstead.

Sources Sought Synopsis / Market Research

This document is a Sources Sought Synopsis (SSS) to identify potential sources with the expertise, capabilities, and experience to meet the requirements for the qualification and re-manufacturing of the C-5 Main Landing Gear (MLG) Trunnion Bearing for the United States Air Force (USAF). The government is seeking information to determine acquisition strategy, including potential set-asides for small businesses.

• Re-manufacturing of the C-5 MLG Trunnion Bearing (NSN: 3120-00-766-2056UC, Part No. 4F23832-103A).

• The item is described as a large, plain self-aligning, spherical bearing, critical for the retraction and extension of the C-5 MLG.

• The anticipated service will provide serviceable assets for Air Force field level and Programmed Depot Maintenance (PDM).

• Top Level Lockheed Drawings are provided for reference.

• Acquisition strategy is for a five-year contract (one basic year plus four ordering periods).

• Estimated start date: July 2027.

• Estimated end date: July 2032.

• Best Estimated Quantities (BEQs) range from 48 to 56 units per year.

• Interested contractors must submit documentation supporting their capability to meet the requirements.

• A Contractor Capability Survey is included, requiring detailed business and capability information.

• Responses are due by the date listed on SAM.gov.

• The government will determine the final acquisition strategy based on market research analysis, including small business responses.

• No set-aside decision has been made.

• Both large and small businesses are encouraged to participate.

• Small businesses are specifically asked to identify areas of work that could be exclusively set aside for them.

• Teaming, joint ventures, or subcontracting arrangements are encouraged, especially for companies that may not possess the full capability independently.

• Participation in this survey does not guarantee future solicitation or contract award.

• The government will not reimburse participants for any expenses.

• Security clearance and foreign participation details are not yet determined.

• Questions should be directed to Jessica Grinstead (Program Manager), Karen Beckford (PCO), and Alyssa Tanner (Buyer) via email.