Variation Management of Key Characteristics

1. Variation Management of Key Characteristics • Contents • Key Characteristics definition • Purpose • Method for accomplishment • Process Control Document form • Structure of the standard • Status and timeframe objective.

2. Variation Management of Key CharacteristicsDefinition of Key Characteristics • Significant influence : •  Product fit •  Performance •  Service life •  Manufacturability • Measurable features. Control of variation is necessary for meeting Customers' requirement/satisfaction.

3. Variation Management of Key Characteristics Purpose • Intent to drive the improvement of the manufacturing processes through adequate planning and effective management of Key Characteristic variation. • Methodology for component/process proving focused on Key Characteristics. •  Understanding processes •  Using appropriate tools •  Demonstrating acceptable process capabilities •  Guidelines for reporting process capability data to primes.

4. Continue to monitor performances No Plan a manufacturing process Yes Is a process change required ? Operate the process Take action from study Analyze data Variation Management of Key Characteristics Method of accomplishment Understand Key Characteristics  Output for each stage.  Report to a common form.

5. Variation Management of Key characteristics Process Control Document (PCD) form • Written description of manufacturing plan • Living document • Performance results • History of changes. PCD is the preferred method of fulfilling the documentation requirements

6. AS9103 PROCESS CONTROL DOCUMENT Page 1 of 2 Process Control Document Number Process Owner Date (Original) Date (Rev) Flowchart Created? Yes/No Part Number / Part Family / Latest Change Level Producer Approvals and Date Customer Approvals and Date Part Name / Description Name: Name: Producer / Plant Manufacturer Code Name: Name: STAGE 1 STAGE 2 KC No KEY CHARACTERISTIC(S) Minimum Origin of KC Are Sources of Is Requirement Variation Identified? Risks Mitigation Specified? Yes/No Yes/No KC Name Process ID Operation Work Instruction No. /Change Level Number Cp Cpk

7. AS9103 PROCESS CONTROL DOCUMENT Page 2 of 2 Process Control Document Number Part Number / Latest Change Level Date (Original) Date (Rev) STAGE 3 STAGE 4 STAGE 5 STAGE 6 KC Preliminary Process Capability Study - Type of Results of Study Action Ongoing Monitoring Methods No. Control from Chart Study, Y/N Stable Calculations Control Chart/Other Capability Y / N Review Freq. Hist / New Date Gage Gage # M.S.A. % n Freq. Mean Std. Dev. Cp Cpk Type Frequency

8. Variation Management of Key Characteristics Structure of the standard  Consist of 2 sections : • Minimum requirements • general requirements (process capability, variation management, substitute KCs, flow-down to sub-tiers……) • Flowchart with 7 stages • Best practices / guidelines/ form in appendix format. • Process Control Document (PCD) • Model for flowchart activities

9. THIS STANDARD SHOULD BE AVAILABLE IN JULY 2001 Variation Management of Key Characteristics Status and timeframe objective Standard balloted and consensus reached  PCD form available on document.  Recommended tools / forms may be incorporated in the IAQG web-site

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