Source Pre-Qualification Trunnion Bearings

SOURCE PRE-QUALIFICATION REQUIREMENTS

AMSC C: These parts require engineering source approval by the control activity to ensure the quality and integrity of the part. Alternative sources must pre-qualify by submitting a Source Approval Request (SAR) according to the design control activity’s procedures and receive approval from the applicable government engineering activity, AFLCMC/WLSE (C-5 Galaxy Division Engineering).

SECTION A: ITEM IDENTIFICATION

Stock Number
(NSN)

Part Number

3120-00-766-2056

4F23832-103A

Vendor P/N

Nomenclature
C-5 MLG Trunnion Bearing

SECTION B: JUSTIFICATION FOR ESTABLISHING A QUALIFICATION

REQUIREMENT

The C-5 MLG Trunnion Bearing is a Spherical Bearing which is self-aligning and selflubricating by the incorporation of a tetrafluoroethylene (TFE) in a liner between the inner ring (ball) and the outer ring (race) for use in the temperature range of -65℉ to 250℉
The bearing assembly provides a means for attaching the MLG trunnion to the aircraft. Failure of the C-5 MLG would place the aircraft and crew in an extremely hazardous situation due to possible inability to lower a MLG during flight. Additionally failure of the bearing performance may induce additional damage in the MLG trunnion pins, or trunnion frame.

SECTION C: QUALIFICATION REQUIREMENTS

Source approval information: Listed below are the minimum requirements necessary to become a qualified offeror on the equipment listed above. Prospective contractors should report in accordance with MIL-HDBK-831.

a. Potential offerors shall demonstrate the ability to manufacture the bearing and install it into the retainer to form upper level bearing assembly 4F90004-101A, and demonstrate that the bearing assemblies will pass the performance requirements listed on LMCO drawing 4F90004.
b. Potential offerors shall provide a detailed quality plan implementing ISO 9002 (or equivalent).
c. Potential offerors shall provide a detailed re-manufacturing plan describing remanufacturing and inspection procedures and shall provide for:

1. Traceability of batch/lot for re-manufacturedmaterial

2. Identification of material sources. Sources for raw materials must be documented for each type of material. No material waivers will be granted.
3. Identification of sources for processes not done in house shall be documented.
d. Potential offerors shall perform a minimum of 75% of the re-manufacturing workload in-house.
e. After qualification of the re-manufacturing plan processes, vendor sources, quality