What Is the Difference Between PPAP and a First Article Inspection (FAI)?

By Yamm Labs · Updated September 2026 · 6 min read

A quality engineer at a precision machining shop in Peenya opens two purchase orders in the same week. The first is from an automotive Tier-1 and says “PPAP Level 3 per AIAG.” The second is from an aerospace customer and says “AS9102 FAI report required with first delivery.” Both parts are machined aluminium brackets, and both customers want a ballooned drawing with measured dimensions. One pack cannot serve both, because the two documents answer different questions, and the difference decides when each can be signed.

What does PPAP prove that a first article inspection does not?

An FAI is a snapshot of one part. The supplier takes a representative item from the first production run, verifies every drawing characteristic, and records the material, special processes and functional tests behind it. AS9102 organises this on three forms: Form 1 for part number accountability, Form 2 for product accountability, and Form 3 for characteristic accountability, verification and compatibility evaluation.

PPAP is a film of the process. The AIAG manual asks whether the supplier has understood the customer’s design record and specifications, and whether the process can produce conforming parts consistently during an actual production run at the quoted production rate. Dimensional results are one element among many; the pack also carries the process flow diagram, PFMEA, control plan, measurement system analysis, initial process studies, test results and the warrant. The manual defines five submission levels; Level 3 is the warrant with samples and complete supporting data, and the customer states which level applies.

Which rules decide the difference between PPAP and FAI?

Neither PPAP nor FAI is approved by a government regulator. Both are set by industry standards bodies and enforced through the customer’s purchase terms and the supplier’s certification.

• AIAG sets the PPAP method. The Automotive Industry Action Group publishes the PPAP manual, now in its fourth edition, which defines the elements, the submission levels and the warrant. The AIAG PPAP manual page describes its purpose.
• IATF 16949 makes product approval a certification requirement. Automotive suppliers certified to IATF 16949 must run a product and manufacturing approval process that meets their customer’s requirements, and the OEMs publish customer-specific requirements on top of the manual.
• SAE and the IAQG set the FAI method. AS9102 defines the FAI forms and when an FAI must be repeated. Revision C was released in June 2023.
• AS9100 asks for production process verification. The aerospace quality system standard expects certified suppliers to verify their production processes, and it points to AS9102 as the reference method. Many aerospace customers make AS9102 mandatory through their purchase orders.

For an Indian supplier, the first document to read is the customer’s purchase order and supplier quality manual, not a template.

An FAI proves the first part was right; a PPAP proves the next thousand will be.

When can each one be signed? The timing decision

An FAI can be completed on a representative part from the first production run, so the report can go out with the first delivery. A PPAP cannot be completed until the supplier has run the process under production conditions. The AIAG default for that significant production run is one to eight hours of production, totalling at least 300 consecutive parts, unless the customer’s quality representative specifies otherwise. The samples and capability studies come from that run.

That gap changes how the documentation is planned:

• Draft the PPAP documents before the run. The process flow, PFMEA and control plan should be in place before the significant production run, because the run is meant to prove the process they describe.
• Balloon the drawing once. Number every characteristic on one ballooned print and one characteristic register, so the same numbering can feed an AS9102 Form 3 and a PPAP dimensional report without renumbering.
• Book the run into the customer’s timeline. If the Tier-1 wants the warrant by a fixed date, the run, the measurements and the plant’s review all sit in front of it.
• Know what restarts each clock. AS9102 expects a new full or partial FAI after changes such as a design change, a change of process, tooling, source or location, or a long lapse in production, often set at two years. PPAP resubmission after a change follows the customer’s own requirements, so check them at the change notice, not at dispatch.

The planning documents behind a PPAP are covered in more depth in our APQP, PFMEA and control plan questions.

Which one does your customer need, and who prepares it?

If the customer is an automotive OEM or Tier-1, assume PPAP and confirm the submission level the order names. If the customer is in aerospace or defence, assume an AS9102 FAI. If any other customer asks for a “first article”, ask in writing which format it expects.

Yamm Labs’ PPAP Desk works on the automotive side, remotely from Gurugram. The desk prepares the documentation core, from the ballooned print and PFMEA to the control plan, report formats and a draft warrant. The plant keeps the trial run, measurements, capability studies, Gage R&R trials, testing and samples, and the supplier’s responsible official signs the warrant. The two-part pilot is free: no retainer and no software setup. The desk has generated more than fifty Level 3 PPAP reports for Manu Auto India. The PPAP documentation FAQ answers the related questions on levels, elements and the warrant.

A worked example: one bracket, two customers

Go back to the Peenya shop with its two purchase orders. The brackets are similar, but the two packs are built on different evidence and close on different signatures.

For the aerospace order, the engineer balloons the drawing, lists every characteristic on AS9102 Form 3, and measures a representative bracket from the first production run. Form 1 records the part number and revision. Form 2 records the material, the special processes such as anodising, and any functional tests, with the supporting certificates. When every characteristic conforms, the first article inspection report goes out with the first delivery.

For the automotive order, the same ballooned drawing and the same characteristic numbers feed the PPAP dimensional results. But the engineer cannot close the pack yet. The process flow diagram, PFMEA and control plan come first. Then the plant runs the significant production run with production tooling, gauges and operators. The samples, the capability studies and the measurement system analysis come from that run. Only then does the responsible official sign the Part Submission Warrant.

The shared work is the ballooned print and the characteristic register. Everything after that splits. The FAI stops at proof that one part is right. The PPAP goes on to prove the process that makes the next part.

Common mistakes with PPAP and first article inspection

Most of the rework we see comes from treating the two documents as one. These are the errors that cost the most time.

• Sending an FAI report where PPAP was asked for. Dimensional results alone do not make a PPAP. Without the process documents, the run evidence and the warrant, the submission is incomplete.
• Measuring the wrong parts. A first article inspection uses a part from the first production run. PPAP samples come from the significant production run. Parts from a prototype or a toolroom trial serve neither.
• Renumbering the drawing for each customer. Two ballooning schemes for one part invite transcription errors. Number once and keep one register.
• Writing the control plan after the run. The run is meant to prove the process the control plan describes. A control plan written afterwards describes what happened, not what was planned.
• Missing a change that restarts the clock. A new tool, a new source or a move to another line can call for a fresh FAI or a PPAP resubmission. Check the customer’s rules when the change is proposed.
• Assuming the level. PPAP has five submission levels. The customer states which one applies, so confirm it in writing before the pack is built.

A step-by-step checklist when a customer asks for either

This sequence works whether the order says PPAP, FAI or both. It follows the logic above: read the rules, number the characteristics once, then gather the evidence each method needs.

1. Read the purchase order and supplier quality manual. Note whether the customer asks for PPAP, an AS9102 first article inspection or its own format.
2. Confirm the details in writing. For PPAP, the submission level and any customer-specific requirements. For FAI, whether a full or partial report is expected.
3. Freeze the drawing revision and balloon it. One ballooned print and one characteristic register for the part.
4. For PPAP, write the process documents. Process flow diagram, PFMEA and control plan, each drawn from the register, before the run.
5. Book the right run. The first production run for an FAI; the significant production run, at the quoted rate, for PPAP.
6. Measure and test. Every characteristic on the register, plus material and special-process records and functional tests.
7. For PPAP, add the process evidence. Measurement system analysis, initial process studies and the samples the level calls for.
8. Close with the right document. The FAI report on Forms 1 to 3, or the Part Submission Warrant signed by the responsible official.

Customer requirements sit on top of both standards and change over time. Confirm the current text with your compliance team or the customer’s supplier quality engineer before you lock the plan.

How to brief a documentation team on PPAP or FAI

Whether the documents are written in-house or by an outside desk, a complete brief saves a round of questions. Send these with the request:

• The purchase order clause that names the method, PPAP or FAI.
• The drawing at its released revision and any authorised changes not yet on it.
• The customer’s supplier quality manual or PPAP checklist, and the submission level for PPAP.
• The process route: operations, machines, special processes and where inspection happens.
• The gauges and fixtures the plant will use, and the laboratory for material and functional tests.
• The date of the first delivery or the warrant, and who will sign.

What should come back is a ballooned print, a characteristic register, the process documents for PPAP and blank report formats for the plant’s measurements. If anyone offers to fill in measured values or capability figures without your plant’s data, decline. Both a first article inspection and a PPAP only count when the numbers come from your own parts and gauges.

People also ask

Is a first article inspection part of PPAP?

Not by that name. PPAP includes dimensional results for the part, which cover similar ground to an FAI’s characteristic check, but PPAP adds process evidence and a signed warrant.

Can one ballooned drawing serve both PPAP and an AS9102 FAI?

Yes, if every characteristic is numbered once and the numbering is kept in a single register. The measurements themselves must still come from the right parts: the first production run for an FAI and the significant production run for PPAP.

Who approves a PPAP or an FAI in India?

The customer, not a government body. The supplier’s responsible official signs the PPAP warrant, and the customer approves or rejects the submission under its own requirements.

Does an automotive customer ever ask for a first article inspection?

Some do, usually under their own name for an initial sample check, and the term means different things to different buyers. If an automotive order asks for a “first article”, ask in writing whether the customer wants an AS9102 report, its own sample format or a PPAP submission. The answer decides which evidence you gather and which document closes the pack.

How many parts does a first article inspection measure?

An AS9102 first article inspection verifies a representative part from the first production run against every drawing and specification requirement. PPAP is different: its samples and capability studies come from the significant production run, which by AIAG default is one to eight hours of production and at least 300 consecutive parts unless the customer specifies otherwise.

What are the three AS9102 forms?

Form 1 covers part number accountability, Form 2 covers product accountability, such as material, special processes and functional tests, and Form 3 covers characteristic accountability, verification and compatibility evaluation. Together they make up the FAI report. A PPAP pack has no equivalent set of forms; it is built from elements and closed by the Part Submission Warrant.

Can a supplier prepare the PPAP documents before the first article inspection?

Yes, and it usually should. The process flow diagram, PFMEA and control plan describe how the part will be made, so they belong before any production run. The ballooned drawing and characteristic register can also be built early and shared by both packs. The measurements, tests and samples wait for the right run.

Is FAI or PPAP more work?

PPAP usually carries more documents, because it adds process evidence such as the PFMEA, control plan, measurement system analysis and capability studies to the dimensional check. An FAI goes deep on one part and its records. The effort for either depends on the part, the number of characteristics and what the customer’s own requirements add.