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RPS 20.17 Critical Planning Preparation & Delivery of Critical Parts

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RPS 20.17 Critical Planning Preparation & Delivery of Critical Parts. Goodrich Aerostructures Group. Outline. Definition of Critical Parts How do you distinguish a critical part from other parts? How are Critical Parts handled differently from other parts? Controlled manufacturing plans

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rps 20 17 critical planning preparation delivery of critical parts

RPS 20.17 Critical Planning Preparation & Delivery of Critical Parts

GoodrichAerostructures Group

outline
Outline
  • Definition of Critical Parts
  • How do you distinguish a critical part from other parts?
  • How are Critical Parts handled differently from other parts?
  • Controlled manufacturing plans
  • Recent revision to RPS 20.17
  • Where and How to submit changes
  • Other key changes made in Rev. N
definition of critical parts
Definition of Critical Parts
  • “A critical part is a component (either a part or an assembly) that because of design or manufacturing process considerations, must be controlled to assure that it is produced to strict engineering requirements on a highly uniform and consistent basis”.
  • At a minimum, engine mounts designed by Goodrich/Rohr are critical parts.
definition of critical parts4
Definition of Critical Parts
  • Critical parts are key structural elements whose integrity is crucial to the safety of the aircraft
  • For this reason, critical hardware undergoes extensive testing to insure its reliability
  • Any change to the design or manufacturing processes are carefully evaluated
how do you distinguish a critical part from other parts
How do you distinguish a critical part from other parts?
  • A critical part is any part designated as such per RPS 20.17, RPS 20.17-2 Critical Assembly, or RPS 20.17-4 Critical Extrusion.
  • The following note (or one very similar) will be specified on the drawing and specified for each affected part number “CRITICAL PART PER RPS 20.17”.
how are critical parts handled
How are Critical Parts handled?
  • A Critical Part requires special control of planning.
  • The specific requirements of this planning are specified in RPS 20.17.
  • This planning is referred to as “frozen” or controlled planning.
controlled manufacturing plans
Controlled Manufacturing Plans
  • RPS 20.17 requires that manufacturing plans for critical parts be submitted to GR/AG Quality and M&P Engineering for approval.
  • This plan is then considered “frozen” and all changes must be processed per the requirements of RPS 20.17 prior to being incorporated.
controlled manufacturing plans8
Controlled Manufacturing Plans
  • Parts manufactured or processed to a plan other than the approved plan on file at GR/AG are done so at the supplier’s risk!
  • Hardware manufactured at risk can not be delivered to GR/AG until the plan has been approved by GR/AG and the supplier has received written confirmation of that approval.
controlled manufacturing plans9
Controlled Manufacturing Plans
  • Recent revisions to RPS 20.17 have significantly affected the approval process required for critical parts.
  • Each part number shall have Serial Number Traceability per Para. 3.3.1.8 Sub-Para. a thru e.
what is a critical operation
What is a “Critical Operation”?
  • Critical Operation (CR) - any operation that, if removed, revised, or changed in sequence, may affect the quality or integrity of the final product.
what are some examples of critical operations
What are some examples of Critical Operations?
  • Forging operations
  • Heat treatment
  • Starting stock material specification
  • Non-destructive testing of finished part
  • Traceability requirements
  • Ref. par. 5.3.1 in Revision N for a complete

list of critical operations

how are critical operations identified on the planning
How are Critical Operations identified on the planning?
  • When a plan is submitted, the letters (CR) should precede each operation that is a “critical operation”.
  • If no operations are identified with a (CR), all operations will be considered “critical” and all changes will require GR/AG approval prior to implementation.
changes to critical operations
Changes to Critical Operations
  • Any change to the content or sequencing of Critical Operations shall require approval from GR/AG M&P Engineering and Materiel Quality Engineer (MQE) or Program Quality Engineer (PQE) prior to their implementation.
changes to critical operations14
Changes to Critical Operations
  • When production planning is submitted to GR/AG for approval, a “Critical Planning Revision Sheet” will accompany the plan. All relevant blocks should be completed. An incomplete form will be returned to the supplier and result in a delay of the planning approval.
what if critical operations are not changed
What if “Critical Operations” are not changed?
  • Changes to planning that do not affect “Critical Operations” must be submitted to GR/AG M&P Engr and GR/AG MQE or PQE within 10 working days.
  • As before, any change to the plan will require a change to the approved planning date and (where applicable), a change to the planning revision letter.
slide16

What if “Critical Operations” are not changed?

  • Changes to operations that are not “Critical Operations” do NOT require GR/AG approval. Hence, these changes can be made and immediately implemented by the supplier. As stated before, a copy of this revised plan must be submitted to GR/AG within 10 days.
control of planning revisions
Control of Planning Revisions
  • During the annual RPS 20.17 audit, the ‘working’ shop travelers (job instructions) will be audited for conformance to the approved planning on file at GR/AG. The planning dates/ revision letters must match as well as the content and sequencing of all “critical operations”.
control of planning revisions18
Control of Planning Revisions
  • Failure of the supplier to comply with these requirements will result in the supplier being put on probation and/or may lead GR/AG to require that ALL planning changes have prior GR/AG approval.
where and how changes are to be submitted
Where and How changes are to be submitted
  • If at all possible, changes are to be

e-mailed to M&P Engineer and a MQE / PQE

  • Patricia Adams, M&PE, e-mail address

[email protected]

- Dave Hollings, MQE, e-mail address, [email protected]

  • Ed Bernad, PQE, CFM56 & PW4000 Engine Mount Program, e-mail address

[email protected]

where and how changes are to be submitted20
Where and How changes are to be submitted
  • If e-mail is not possible, all plans should be faxed to Patricia Adams at (619) 691-3781 (this is both her phone and fax number)
  • Do NOT fax a copy to the buyer / subcontract administrator UNLESS you have first sent a copy to the cognizant engineers
other key changes
Other Key Changes
  • Engineering takes precedence over the approved plan.
  • 1- 1.3.4 “Where a conflict exists between the engineering requirements and the approved planning, the engineering requirements shall take precedence.”
other key changes22
Other Key Changes
  • Failure to strictly comply to the requirements of Rev. N could lead to probation and the loss of privileges
  • 1- 1.3.3 “At the discretion of RM&PE or RQA, Rohr may require that all revisions to the planning (whether critical operations or non-critical operations) may be submitted to RM&PE and RQA for approval prior to the delivery of the affected hardware.”
other key changes23
Other Key Changes
  • Raw material must be traceable to the point of manufacture and ALL raw material sources (mills) are controlled by the GR/AG QSD
  • 3- 3.1.15.1 “Raw material shall be traceable to approved raw material manufacturers specified in the Qualified Suppliers Document.”
rps 20 17 training record
RPS 20.17 Training Record
  • Date of Training ________________
  • Attendee’s of Training

____________ ____________

____________ ____________

____________ ____________

  • Instructor: David Hollings
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