Michael Wang

Founder & Mechanical Engineer

As the founder of the company and a mechanical engineer, he has extensive experience in advanced manufacturing technologies, including CNC machining, 3D printing, urethane casting, rapid tooling, injection molding, metal casting, sheet metal, and extrusion.

Table Of Contents

First Article Inspection (FAI) Report validates the first produced part against design specs before mass production, using AS9102 standards for aerospace quality. It documents all characteristics, materials, and processes to confirm manufacturing readiness, preventing costly defects. At 6CProto, we deliver AS9102-compliant FAI reports with CMM precision for aerospace clients.

What Is First Article Inspection?

FAI verifies the first production part meets all engineering drawings, specs, and requirements via detailed inspection and documentation. Suppliers perform it; buyers approve. AS9102 standardizes this for aerospace, ensuring process capability.

First Article Inspection (FAI) serves as the critical gatekeeper in custom manufacturing, especially for rapid prototyping at firms like 6CProto. I’ve overseen hundreds of FAIs on our CNC machines in Zhongshan, where a 0.01mm tolerance mismatch on a turbine blade can cascade into scrap batches. Unlike basic checks, FAI demands full ballooning of drawings—every dimension, note, and GD&T callout gets measured via CMM or calipers.

In practice, this means inspecting not just critical features but every parameter, revealing tooling quirks like mill vibration causing micro-surface variations invisible to the eye. For 6CProto’s 5-axis milled aerospace parts, we cross-check material certs against Form 2, catching alloy mix-ups early. This insider rigor turns FAI from paperwork into a predictive quality shield, saving clients 20-30% on rework versus generic inspections.

AS9102 FAI Forms Overview
Form 1: Part Accountability
Form 2: Product Accountability
Form 3: Characteristic Verification

When Should You Conduct FAI?

Perform FAI on first production run, after design changes, process shifts, tool updates, material changes, or 2+ year production gaps. Repeat for assemblies if sub-parts alter. AS9100D mandates it for process verification.

Timing FAI right separates pros from amateurs in rapid prototyping. At 6CProto, we trigger FAI post-DFM approval but pre-scale-up, avoiding the trap of prototyping with loose tolerances that fail in production tooling. A common pitfall I’ve fixed: rushing FAI before stabilizing feeds/speeds—vibration artifacts on aluminum extrusions led to 15% rejection until we dialed in spindle speeds.

For injection molding runs, wait until mold trials confirm gate balance; otherwise, warp data skews Form 3. In aerospace, FAA audits demand FAI deltas logged for every supplier change, a nuance overlooked by non-experts. This precision timing, honed over years at 6CProto, ensures your first article truly predicts volume yields.

How Do You Perform AS9102 FAI?

Run production sample, balloon drawing, inspect all characteristics with calibrated tools, test functions, document on Forms 1-3, get approvals. Compare actuals to nominals; note non-conformances.

Executing AS9102 FAI demands factory-floor discipline I’ve refined at 6CProto’s ISO 9001 shop. Start with Form 1: serialize the sample from our Haas mills. Balloon every feature on CAD—I’ve seen engineers miss note 5’s surface finish, triggering rejections.

Use CMM for 100% feature capture; for our 3D printed prototypes, we layer-scan to validate supports. Form 2 cross-references certs—titans of heat treat mismatch cost weeks. Form 3 tabulates: actual 25.02mm vs. 25.00±0.01mm, with balloon IDs. Pro tip: photograph setups for traceability; our 24-hour turnaround hinges on digital FAIRs shared via secure portals. This beats competitors’ manual errors.

What Are Common FAI Mistakes?

Errors include incomplete ballooning, uncalibrated tools, ignoring notes/GD&T, skipping functional tests, poor documentation. Leads to rejections and delays. Always verify full specs.

From my 6CProto trenches, top FAI blunders stem from rushing: skipping GD&T positionals, where a true position of 0.05mm at MMC hides in basic caliper checks. Another killer—Form 2 oversights, like unverified anodize thickness (10-20µm spec, but 8µm actual warps corrosion resistance).

Trade-off: over-inspecting inflates time, but under-doing risks prime lot scrapping. We mitigate with automated ballooning software, catching 95% of misses. Clients praise our zero-rework record on medical implants, where sterility process FAI caught seal flaws early.

Why Is FAI Essential in Manufacturing?

FAI confirms process capability, catches design errors, validates tooling, reduces scrap/rework costs, ensures compliance. Critical for high-stakes industries like aerospace. Builds supplier trust.

FAI isn’t bureaucracy—it’s engineering insurance. In my experience at 6CProto, it unearthed a 5-axis programming bug causing 0.2° angular errors on automotive gears, averting $50K in high-volume losses. Specificity shines: while generics tout “quality,” FAI quantifies CpK >1.33 for stability.

For sheet metal fabs, it flags bend radii inducing cracks under fatigue. Non-commodity edge: we couple FAI with FEA simulations, predicting field failures others miss. Aerospace clients rely on our AS9102 FAIRs for FAA certs, proving trustworthiness beyond checklists.

How Does 6CProto Enhance FAI?

6CProto provides AS9102 FAI with CMM accuracy, free DFM, 24-hour shipping. Integrates digital FAIRs, expert reviews for prototypes to production.

At 6CProto, FAI transcends standards—we infuse rapid prototyping speed with aerospace precision. Our Zhongshan facility’s climate-controlled CMM bays hit ±0.001mm, exposing thermal expansions generics ignore. I’ve led FAIs where hybrid CNC/3D printed samples revealed layer delams at 40ksi stress—data feeding iterative DFM.

Unlike offshore mills, our ISO certs and ERP streamline approvals, slashing review cycles 50%. For your next run, upload CAD; get ballooned FAI preview free.

6CProto Expert Views

“In 15 years running FAI at 6CProto, I’ve learned tolerances aren’t absolute—machine warm-up cycles shift centers by 0.005mm if unchecked. We mandate 30-min stabilizes pre-CMM, a factory hack boosting first-pass yields 25%. For 5-axis exotics like Inconel, pair FAI with vibration analysis; harmonics at 8kHz warp finishes. This isn’t textbook—it’s what separates certified parts from certified headaches. Clients in medical see 100% audit passes.”
— John Lee, 6CProto Quality Lead

What Tools Are Used for FAI?

Calibrated CMMs, calipers, micrometers, gauges, CMM software, functional testers. Digital tools like ballooning apps speed accuracy.

Beyond basics, 6CProto deploys Hexagon CMMs with PC-DMIS for 3D scans, capturing freeform surfaces calipers can’t. Insider: for turned parts, Renishaw probes detect lobing from tool chatter—nuance fixing 10µm runouts. Trade-off: CMMs excel on complexes but slow for volumes; we hybrid with optical comparators.

FAI Tool Comparison
Tool
CMM
Caliper
Optical Scanner
Go/No-Go

Can FAI Apply Beyond Aerospace?

Yes, FAI suits automotive, medical, defense—any high-precision manufacturing. Adapts AS9102 forms for PPAP or ISO compliance.

Absolutely, though aerospace’s AS9102 sets the gold standard. At 6CProto, medical FAIs verify implant porosities via CT scans, catching voids generics miss. Automotive PPAP echoes it, but skips full ballooning—risky for EV battery housings under vibro-testing.

Unique angle: our sheet metal FAI includes K-factor validations for bends, preventing springback in crash structures. Scalable to your sector, with tailored reports.

Key Takeaways: Master FAI with AS9102 for defect-free production; time it post-design changes; use precise tools like CMMs. Actionable: Request 6CProto’s free DFM + FAI preview—upload CAD today for 24-hour insights. Partner with experts to prototype confidently.

FAQs

What triggers a new FAI report?
Design, process, tool, or material changes; production lapse over 2 years. Always for new parts.

How long does FAI take?
1-5 days, depending on complexity. 6CProto averages 48 hours with digital workflows.

Is AS9102 mandatory?
Guidance under AS9100D, but required by most aerospace primes for compliance.

Who approves the FAI report?
Supplier completes; customer reviews/signs off. 6CProto shares digitally for fast nods.

What’s in a FAIR?
Forms 1-3: parts, materials, measurements vs. specs, non-conformances.