Advanced Product Quality Planning (APQP)

When to use

Use this skill when:

• A new product or part is being launched and a structured quality plan is needed
• Managing an APQP project and tracking deliverables across phases
• Conducting an APQP gate review to assess launch readiness
• A customer requests an APQP status report or phase completion confirmation
• Auditing whether a supplier's APQP process is adequate

Prerequisites

• Customer requirements, specifications, and drawings (or RFQ package)
• Programme timing (SOP date, PPAP submission date, prototype gates)
• Nominated APQP team (cross-functional: engineering, quality, purchasing, manufacturing, logistics)
• Customer APQP template if OEM-specific format required

Workflow

Overview — The 5 APQP Phases

Phase 1          Phase 2          Phase 3          Phase 4          Phase 5
Plan & Define → Product Design → Process Design → Product & Process → Feedback &
                & Development   & Development      Validation         Corrective Action
     ↓               ↓               ↓                ↓                  ↓
  Program         Prototype       Pre-launch         PPAP              SOP +
  approval         build           build           submission          Production

All phases run with concurrent engineering — phases overlap and teams work in parallel.

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Phase 1 — Plan and Define Program

Objective: Understand customer requirements and define what the product must do.

Key deliverables:

Deliverable	Description
Voice of the Customer (VOC)	Customer wants, needs, expectations — translated to measurable requirements
Design Goals	Product performance targets derived from VOC
Reliability and Quality Goals	Target failure rate, warranty targets, Cpk targets
Preliminary Bill of Materials	Draft BOM from design intent
Preliminary Process Flow	High-level process sequence
Preliminary Special Characteristics	Initial list of critical/significant characteristics
Product Assurance Plan	Quality plan for the programme
Management Support	Signed-off programme charter with resources and timing

Gate 1 pass criteria:

• Customer requirements documented and agreed
• Feasibility confirmed (technical and commercial)
• Team chartered and timing plan approved
• Special characteristics list preliminary but complete

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Phase 2 — Product Design and Development

Objective: Translate customer requirements into a product design with verified characteristics.

Key deliverables:

Deliverable	Description
DFMEA	Design FMEA — all failure modes analysed, H-AP items addressed
Design Verification Plan (DVP)	Test plan linked to DFMEA failure modes
Drawing and Specification Release	Fully released engineering drawings and 3D data
Material Specifications	Raw material specs, supplier approval plan
Drawing and Specification Changes	Change management process in place
New Equipment and Tooling	List of new equipment/tooling required
Special Product and Process Characteristics	Updated with design detail
Gauge Plan	MSA requirement list — which characteristics need MSA studies
Prototype Control Plan	Control plan for prototype builds
Prototype Build	Prototype parts manufactured and tested
Engineering Drawings	Released and approved

Gate 2 pass criteria:

• DFMEA complete with all H-AP actions closed
• DVP complete and test execution started
• Prototype build results acceptable
• All special characteristics identified and confirmed
• No outstanding major design concerns

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Phase 3 — Process Design and Development

Objective: Design and verify the manufacturing process.

Key deliverables:

Deliverable	Description
Packaging Standards	Packaging design, labelling, MMOG/LE if required
Product/Process Quality System Review	Internal quality system audit against customer requirements
Process Flow Chart	Detailed process flow for all operations
Floor Plan Layout	Manufacturing floor layout approved
Characteristics Matrix	Matrix linking process steps to product characteristics
PFMEA	Process FMEA — all failure modes, AP ratings, H-AP actions complete
Pre-Launch Control Plan	Control plan for pre-launch production
Process Instructions	Work instructions for all operations
MSA Plan	Gauge R&R plan for all measurement systems
Preliminary Process Capability Study Plan	Plan for capability studies on special characteristics
Packaging Specifications	Final packaging specs including OEM labelling

Gate 3 pass criteria:

• PFMEA complete, H-AP actions closed or formally accepted
• Pre-launch Control Plan approved
• Process instructions complete for all operations
• Tooling and equipment installed and qualified
• No unresolved open issues blocking pre-launch build

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Phase 4 — Product and Process Validation

Objective: Validate the production process and prepare for PPAP submission.

Key deliverables:

Deliverable	Description
Production Trial Run	Significant Production Run (minimum run to PPAP requirements)
MSA Studies	Gauge R&R completed for all special characteristics
Preliminary Process Capability	Cpk study on special characteristics (target ≥ 1.67)
Production Part Approval (PPAP)	All 18 PPAP elements complete and submitted
Production Validation Testing	Final validation tests on production parts
Packaging Evaluation	Production packaging validated
Production Control Plan	Final production control plan approved
Quality Planning Sign-Off	Customer approval of PPAP and APQP completion
Management Support Sign-Off	Internal management approval for SOP

Gate 4 pass criteria (= PPAP approval):

• Significant production run completed (minimum 300 consecutive parts per AIAG PPAP 4th ed §4.0, unless the customer specifies otherwise in writing)
• Dimensional results 100% conforming
• Cpk ≥ 1.67 on all special characteristics (or customer-approved deviation)
• %GRR < 30% for all MSA studies
• PPAP submitted and customer approval received
• No open concerns from validation testing

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Phase 5 — Feedback, Assessment and Corrective Action

Objective: Continuous improvement after SOP — close the loop on any issues found in production.

Key activities:

Activity	Description
Reduced variation	Monitor process capability, reduce common-cause variation
Improved customer satisfaction	Track warranty, field returns, and customer scorecards
Improved delivery and service	Monitor OTD (on-time delivery) and logistics performance
Lessons learned	Document lessons learned for future programmes
Control Plan updates	Update based on production data and any quality escapes
PFMEA updates	Update based on field failures and warranty data

Phase 5 is ongoing. There is no defined end gate — it runs for the life of the programme.

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APQP timing — rule of thumb

Milestone	Typical timing before SOP
Programme approval / Phase 1 complete	18–24 months
Design release / Phase 2 complete	12–15 months
Process design complete / Phase 3 complete	8–10 months
PPAP submission	4–6 months
PPAP approval (customer)	3–4 months
Pre-production builds	2–3 months
SOP	0

Automotive OEM programmes vary — always confirm with the customer's APQP coordinator.

Validation criteria

At each gate review, verify:

• All deliverables for the phase are complete (not "in progress")
• No open H-AP items in DFMEA or PFMEA without approved actions
• No outstanding design or process concerns without a documented resolution plan
• Team sign-off obtained from all functions (quality, engineering, manufacturing, purchasing)
• Customer confirmation received before advancing to next phase

Gate reviews are STOP gates — do not advance until all criteria are met.

Common mistakes

• Starting Phase 2 before customer requirements are fully understood and documented (Phase 1 incomplete)
• PFMEA created after process is already running — it must drive process design, not document it
• Production trial run shorter than 300 consecutive parts without written customer authorisation — the PPAP samples must come from this run; a shorter run requires an explicit customer waiver
• Capability studies run on off-tool or pre-production parts — must be from production tooling
• Prototype Control Plan used for PPAP submission — production control plan must be separate
• MSA studies done after PPAP submission — must be complete before PSW is signed
• Phase 5 never started — APQP is treated as "done" at SOP rather than as a continuous loop
• Lessons learned not captured — same problems recur on next programme

Output Format

At the start of each use, ask the user:

"How would you like to receive the output? A — Structured Markdown (formatted tables and sections, ready to copy) B — Plain tables (simplified structure for Excel or Word) C — Narrative report (flowing text for a formal document or email)

Default: A."

Adapt all output sections to the chosen format. If the platform or session context already defines a format preference, skip this question.

Changelog

Version	Date	Author	Change
1.0	2026-06-06	@RBraga01	Initial release
1.1	2026-06-06	@migmcc	Added 300-part production trial run minimum to Gate 4 criteria and Common Mistakes