What is the primary objective of Six Sigma?

The primary objective of Six Sigma is to reduce process variation and defects to achieve 3.4 defects per million opportunities (DPMO), accounting for a 1.5σ long-term mean shift. This data-driven methodology employs DMAIC (Define, Measure, Analyze, Improve, Control) for existing processes and DMADV for new designs, linking projects to strategic priorities via governance, tollgates, and belt roles (Champions, Master Black Belts, Black Belts, Green Belts).

Who is legally or professionally required to comply with Six Sigma?

No organizations are legally required to comply with Six Sigma, as it is a voluntary, data-driven process improvement methodology without mandatory regulatory enforcement. Professionally, it is adopted by executives in manufacturing, healthcare, finance, and services—often two-thirds of Fortune 500 firms—for roles like Black Belts requiring ASQ CSSBB certification (3 years experience, verified projects).

Does Six Sigma require an external audit or third-party certification?

Six Sigma does not require external audits or third-party certification, operating as a de facto standard via internal governance, tollgates, and DMAIC deliverables. Certifications like ASQ CSSBB (165-question exam, project affidavit) or IASSC provide professional validation under ISO/IEC 17024 accreditation, but organizational deployment relies on internal roles and sustainment mechanisms like SPC and control plans.

How often should an assessment for Six Sigma be performed?

Six Sigma assessments should be performed continuously via Statistical Process Control (SPC) monitoring, control charts, and periodic audits to detect special-cause variation. Projects typically span 4–6 months with tollgate reviews per DMAIC phase; program health is reviewed quarterly by Champions, with maturity evaluations using internal metrics like project Define pass rates and sustainment after 12 months.

What are the consequences of non-compliance with Six Sigma?

There are no legal consequences for non-compliance with Six Sigma, as it lacks regulatory mandates or penalties. Internal risks include sustained high defects (e.g., >60% project failure rates from poor governance), unquantified Cost of Poor Quality (CoPQ), lost savings (e.g., Motorola's $17B benchmark), and competitive disadvantage in quality-driven sectors.

Can Six Sigma be mapped to other international frameworks?

Yes, Six Sigma can be mapped to other international frameworks through shared elements like process control, audits, and continuous improvement. Its DMAIC aligns with ISO 13053:2011 guidelines, QMS documentation, and Lean tools (e.g., 5S, VSM), enabling integration for maturity models without universal standardization.

What is the first step to begin implementing Six Sigma?

The first step to implement Six Sigma is to secure executive sponsorship and develop a Project Charter in the Define phase. This includes business case, SMART goals, SIPOC mapping, VOC-to-CTQ translation, scope boundaries, and Champion assignment for tollgate oversight, ensuring strategic alignment before Measure-phase data collection.

What is the primary objective of AS9120B?

AS9120B's primary objective is to establish a quality management system (QMS) for organizations that procure, store, split, and resell aerospace parts without altering product characteristics. Built on ISO 9001:2015’s 10-clause high-level structure, it adds over 100 aerospace-specific requirements addressing distribution risks like loss of traceability, counterfeit/suspected unapproved parts, documentation errors, and external provider controls to ensure chain-of-custody integrity.

Who is legally or professionally required to comply with AS9120B?

AS9120B applies to stockist distributors, pass-through distributors, and those performing batch splitting in aviation, space, and defense supply chains. Certification is not legally mandatory but is a commercial requirement imposed by OEMs and primes for supply chain approval, with approximately 2,500 global certifications (over 850 in the U.S.) as of early 2026 enabling OASIS listing and market access.

Does AS9120B require an external audit or third-party certification?

Yes, AS9120B requires third-party certification through accredited registrars via Stage 1 (documentation) and Stage 2 (implementation) audits per AS9101, followed by annual surveillance and triennial recertification. Internal audits are also mandated at planned intervals to verify QMS conformity and effectiveness.

How often should an assessment for AS9120B be performed?

AS9120B requires internal audits at planned intervals to cover all processes annually, plus management reviews at defined intervals aligned with strategic direction. Performance evaluation (Clause 9) includes ongoing monitoring of KPIs, customer satisfaction, supplier performance, and risk actions, with full recertification audits every three years.

What are the consequences of non-compliance with AS9120B?

Non-compliance with AS9120B results in certification denial, suspension, or withdrawal, plus exclusion from OEM supply chains and OASIS listing. It risks major audit nonconformities, contract penalties, recalls, legal liabilities for safety incidents, and reputational damage from counterfeit part propagation or traceability failures.

Can AS9120B be mapped to other international frameworks?

Yes, AS9120B can be mapped to other international frameworks. While it is a specialized IAQG standard tailored for aerospace distribution, it is built on the ISO 9001:2015 high-level structure, allowing its clause-specific requirements for traceability, counterfeit prevention, and supplier controls to integrate seamlessly with other ISO management systems.

What is the first step to begin implementing AS9120B?

The first step is conducting a formal gap analysis against AS9120B clauses using a cross-functional team to identify deficiencies in context (Clause 4), scope, risks, and distributor-specific controls. Document the QMS scope and justify "not applicable" determinations (e.g., Clause 8.3 design), prioritizing traceability and external provider gaps.

Standards Comparison

Six Sigma vs AS9120B

Six Sigma

Voluntary

1986

Data-driven framework for defect reduction and variation minimization

AS9120B

Mandatory

2016

Aerospace QMS standard for parts distributors

Quick Verdict

Six Sigma drives data-driven process improvement across industries via DMAIC for defect reduction, while AS9120B mandates QMS certification for aerospace distributors ensuring traceability and counterfeit prevention. Companies adopt Six Sigma for efficiency gains; AS9120B for supply chain compliance.

Process Improvement

Six Sigma

ISO 13053:2011 Six Sigma process improvement

Cost

€€€€

Complexity

High

Implementation Time

12-18 months

Key Features

Structured DMAIC methodology for process improvement
Professional belt hierarchy with defined roles
Data-driven statistical root cause verification
3.4 DPMO benchmark accounting for 1.5σ shift
Tollgate governance linking to strategic priorities

Quality Management

AS9120B

AS9120B Quality Management Systems for Distributors

Cost

€€€€

Complexity

High

Implementation Time

6-12 months

Key Features

Prevents counterfeit and suspected unapproved parts
Ensures traceability for split lots and chain-of-custody
Strengthens external provider evaluation and flowdown
Mandates configuration management in distribution
Requires product safety and ethics awareness

Detailed Analysis

A comprehensive look at the specific requirements, scope, and impact of each standard.

Six Sigma Details

What It Is

Six Sigma is a disciplined, data-driven management framework (ISO 13053:2011 referenced) focused on process improvement through variation reduction and defect prevention. Its primary scope spans manufacturing, services, healthcare, and finance, using DMAIC (Define, Measure, Analyze, Improve, Control) for existing processes and DMADV for new designs.

Key Components

DMAIC/DMADV methodologies with phase deliverables like charters, SIPOC, MSA, FMEA, control plans.
**Belt hierarchyChampions, Master Black Belts, Black Belts, Green Belts.
Statistical tools (SPC, DOE, hypothesis testing) targeting 3.4 DPMO.
Governance via tollgates, no unified certification but ASQ CSSBB benchmark.

Why Organizations Use It

Drives financial savings (e.g., GE $1B+), customer satisfaction, risk reduction. Voluntary adoption for competitive edge, integrates with Lean/ISO 9001. Builds data-driven culture, enhances reputation.

Implementation Overview

Phased rollout: executive sponsorship, training, project portfolio, DMAIC execution, sustainment audits. Applies enterprise-wide; 12-18 months typical, requires stats training, full-time belts.

AS9120B Details

What It Is

AS9120B is the IAQG quality management system standard for aviation, space, and defense distributors. It augments ISO 9001:2015's high-level structure with over 100 aerospace-specific requirements. Primary purpose: ensure safe, traceable distribution of parts without altering characteristics. Adopts risk-based thinking and PDCA approach.

Key Components

Clauses 4-10 cover context, leadership, planning, support, operations, evaluation, improvement.
Core areas: traceability, counterfeit prevention, supplier controls, preservation, configuration management.
Built on ISO 9001; adds distributor-focused rules like split-lot traceability.
Certification via accredited bodies; OASIS listing for visibility.

Why Organizations Use It

Commercial necessity for OEM supply chains.
Mitigates risks of nonconformities, counterfeits, traceability loss.
Enhances market access, customer trust, operational efficiency.
Builds reputation in ASD sectors.

Implementation Overview

Phased: gap analysis, process design, training, audits (6-12 months).
Applies to distributors globally; scales by size.
Requires internal audits, management reviews, certification audits.

Key Differences

Aspect	Six Sigma	AS9120B
Scope	Process improvement methodology (DMAIC, variation reduction)	QMS for aerospace distributors (traceability, counterfeit prevention)
Industry	All industries (manufacturing, healthcare, finance)	Aerospace distribution (aviation, space, defense)
Nature	Voluntary improvement framework, certifications vary	Certification standard based on ISO 9001:2015
Testing	Project tollgates, statistical validation, no formal audits	Internal audits, management reviews, third-party certification
Penalties	No legal penalties, potential project failure	Loss of certification, market exclusion

Scope

Six Sigma

Process improvement methodology (DMAIC, variation reduction)

AS9120B

QMS for aerospace distributors (traceability, counterfeit prevention)

Industry

Six Sigma

All industries (manufacturing, healthcare, finance)

AS9120B

Aerospace distribution (aviation, space, defense)

Nature

Six Sigma

Voluntary improvement framework, certifications vary

AS9120B

Certification standard based on ISO 9001:2015

Testing

Six Sigma

Project tollgates, statistical validation, no formal audits

AS9120B

Internal audits, management reviews, third-party certification

Penalties

Six Sigma

No legal penalties, potential project failure

AS9120B

Loss of certification, market exclusion

Frequently Asked Questions

Common questions about Six Sigma and AS9120B

Six Sigma FAQ

AS9120B FAQ

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Quick Verdict

What It Is

Key Components

DMAIC/DMADV methodologies with phase deliverables like charters, SIPOC, MSA, FMEA, control plans.

**Belt hierarchyChampions, Master Black Belts, Black Belts, Green Belts.

Statistical tools (SPC, DOE, hypothesis testing) targeting 3.4 DPMO.

Governance via tollgates, no unified certification but ASQ CSSBB benchmark.

What It Is

Key Components

Clauses 4-10 cover context, leadership, planning, support, operations, evaluation, improvement.

Core areas: traceability, counterfeit prevention, supplier controls, preservation, configuration management.

Built on ISO 9001; adds distributor-focused rules like split-lot traceability.

Certification via accredited bodies; OASIS listing for visibility.

Aspect

Six Sigma

AS9120B

Scope

Process improvement methodology (DMAIC, variation reduction)

QMS for aerospace distributors (traceability, counterfeit prevention)

Industry

All industries (manufacturing, healthcare, finance)

Aerospace distribution (aviation, space, defense)

Nature

Voluntary improvement framework, certifications vary

Certification standard based on ISO 9001:2015

Testing

Project tollgates, statistical validation, no formal audits

Internal audits, management reviews, third-party certification

Penalties

No legal penalties, potential project failure

Loss of certification, market exclusion