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Library / WI-410

WI-410 Final Inspection and Certificate of Conformance

WI-410 Final Inspection and Certificate of Conformance

Revision F · Effective 2025-10-06

1 Purpose

This instruction defines the final inspection performed before product is packaged, how the Certificate of Conformance (CoC) is prepared, and how inspection stamps are controlled.

2 Scope

Applies to every shipment of product from the Wichita plant, including partial shipments and replacement parts. Final inspection takes place in Bay 7 (a FOD-critical area, see QP-7.7).

3 Definitions

  • Final inspection release stamp: the inspector's issued stamp applied to the "Final Inspection" block of the traveler, indicating the job is accepted for packaging.
  • Inspection stamp: a uniquely numbered stamp issued to one person by the Quality Manager and recorded on F-410-03.
  • Special process: heat treat, plating, anodize, passivation, NDT, painting or any process listed as special on the PO.

4 Responsibilities

  • Final Inspector: performs final inspection, applies the release stamp and signs the CoC.
  • Quality Manager: issues and withdraws inspection stamps, maintains F-410-03, and resolves disputes.
  • Shipping & Receiving Lead: does not package any job without the final inspection release stamp.

5 Procedure

5.1 Traveler and record review

  1. Confirm every operation on the traveler is complete and stamped or signed.
  2. Confirm the first-piece approval and in-process checks are recorded (WI-120).
  3. If an FAI was required (QP-8.6), confirm Form 3 is signed by Tallgrass Quality and filed in the "FAI Records" library.
  4. Confirm material certifications and all special-process certifications have been received and match the PO requirements (part number, specification, quantity, heat/lot).
  5. Confirm all NCRs on the job are closed with an MRB disposition, and that any use-as-is or repair disposition has an approved F-750-03 Customer Deviation Request (QP-7.5).

5.2 Physical inspection

  1. Count the parts and confirm the quantity matches the traveler and PO.
  2. Inspect visually for burrs, edge condition, damage, cosmetic defects and foreign object debris (WI-305, QP-7.7), including Class A surfaces.
  3. Measure the characteristics the control plan assigns to final inspection with calibrated gages (QP-7.6).
  4. Verify part marking (part number, revision, serial or lot) against the drawing.
  5. Any nonconformance found: red-tag per WI-610. The rest of the job may not be released until Quality decides whether the issue affects the remaining parts.

5.3 Release

When 5.1 and 5.2 are complete, the Final Inspector applies the final inspection release stamp and dates the traveler. The final inspection release stamp is required before packaging; parts without it may not enter the Bay 7 packaging area.

5.4 Certificate of Conformance (F-410-02)

  1. Generate the CoC on F-410-02 from the ERP job. It must state:
    • customer PO number and line;
    • customer part number;
    • drawing revision;
    • quantity shipped;
    • material heat or lot number;
    • list of special-process certifications (supplier, process, cert number), with copies attached when the PO requires;
    • the conformance statement: "Tallgrass Precision Components certifies that the items listed were manufactured and inspected in accordance with the purchase order and applicable drawings and specifications, and conform to all requirements.";
    • the Final Inspector's stamp impression and signature, with date.
  2. If the job carried an F-750-03 deviation, list the approved deviation number on the CoC.
  3. Place the signed CoC with the packing slip. Scan the signed CoC to the ERP job record.

5.5 Inspection stamp control

  1. Stamps are issued only by the Quality Manager and logged on F-410-03 with stamp number, holder and issue date.
  2. A stamp is never shared, lent or used by anyone other than its holder.
  3. A lost stamp is reported to the Quality Manager immediately. The stamp number is retired on F-410-03 and is not reissued.
  4. When an employee leaves or changes role, the stamp is returned to the Quality Manager and the return is logged.

6 Records

Final inspection records, CoC copies and F-410-03 are quality records retained 10 years from creation, or longer if the customer contract requires (QP-4.2).

7 Revision history

Rev Date Change Approved by
D 2021-09-13 CoC moved to ERP-generated F-410-02 Ruth Okafor
E 2023-08-14 Added check for F-750-03 approval on use-as-is and repair Ruth Okafor
F 2025-10-06 Lost stamp numbers retired, not reissued; CoC scanned to ERP job record Ruth Okafor