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

5. PCD is the preferred method of fulfilling
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. STAGE 1 STAGE 2 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:
Producer / Plant
Manufacturer Code
STAGE 1
STAGE 2
KC No
KEY CHARACTERISTIC(S)
Minimum
Requirement
Origin of KC
Are Sources of
Variation Identified? Is
Risks Mitigation Specified?
KC Name
Process ID
Operation
Number
Work Instruction No. /Change Level Cp
Cpk

7. STAGE 3 STAGE 4 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
No.
Preliminary Process Capability Study -
Type of
Control
Chart
Results of Study
Action
from
Study,
Y/N
Ongoing Monitoring Methods
Stable
Y / N
Calculations
Control Chart/Other
Capability
Review Freq.
Hist / New
Date
Gage
Gage #
M.S.A. % n
Freq.
Mean
Std. Dev. Cp
Cpk
Type
Frequency

8. General requirements (process capability,
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……)
Process model (Flowchart with 7 stages)
Best practices / guidelines/ form in appendix format.
Process Control Document (PCD)
Model for flowchart activities

9. This standard has been translated in japanese and should be published
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
This standard has been translated
in japanese and should be published
by April 2002

10. Merci pour votre attention
Variation Management of Key Characteristics
Merci pour votre attention
Questions ?