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About this exam

The Aerospace (D17.1) endorsement is one of the CWI and SCWI endorsements listed by the American Welding Society alongside Structural Steel (D1.1), Structural Aluminum (D1.2), Bridge Welding (D1.5), Railroad (D15.1), Pipeline (API 1104), and several NDE and coordination endorsements. It is designed for inspectors who already hold or are pursuing AWS inspector credentials and who want to demonstrate code-specific knowledge of aerospace fusion welding practice rather than general structural work. Aerospace work differs from structural fabrication in its emphasis on procedure and personnel qualification, documentation discipline, and acceptance criteria for hardware where failure is not an option, so the endorsement signals that a CWI can read and apply aerospace requirements rather than only D1.1. Candidates typically prepare by studying the D17.1 specification itself, its qualification requirements for procedures and welders, and the inspection and acceptance provisions an inspector applies on the shop floor. Because AWS publishes endorsement-specific application instructions and a program price list, candidates should confirm current eligibility, scheduling, and fees through the My AWS Portal and the Program Price List rather than relying on secondhand summaries. Note that beginning January 15, 2026, AWS will no longer accept paper applications for Certifications or Endorsements. This page is independent study material and is not affiliated with or endorsed by AWS.

What you'll study

Common questions

About AWS D17.1 Endorsement preparation

What is the Aerospace (D17.1) endorsement?

It is one of the endorsements AWS lists under CWI and SCWI Endorsements, appearing in the same list as Structural Steel (D1.1), Structural Aluminum (D1.2), Bridge Welding (D1.5), Railroad (D15.1), Pipeline (API 1104), Magnetic Particle Testing, Penetrant Testing (PT), ASME BPVC Section IX, and the coordination endorsements. It adds aerospace-specific code knowledge to an inspector credential.

Who should pursue it?

CWIs and inspector candidates who review or witness welding in aerospace fabrication, where acceptance criteria and qualification records follow the aerospace specification rather than structural steel rules. If your work is structural, D1.1 or D1.5 is the better first endorsement; add D17.1 when aerospace work is actually in your scope.

How do I apply after January 15, 2026?

Beginning January 15, 2026, AWS will no longer accept paper applications for Certifications or Endorsements. All applications must be submitted online through the My AWS Portal. Create or log in to your account and complete the application digitally; AWS points candidates to its Portal Application Submission Instructions for guidance on the process.

How should I sequence my study?

Start with the aerospace specification itself: scope, procedure qualification, personnel qualification, and acceptance criteria. Then work outward to the inspection tasks those clauses imply, such as verifying that qualified procedures and welders are in use and that records are complete. Only after that should you drill practice questions, so answers are anchored in the clause text.

What causes the most failures?

Candidates most often lose points by answering from structural-steel habits instead of the aerospace specification, and by confusing procedure qualification with personnel qualification. A second common weakness is acceptance criteria: knowing a discontinuity is present but not recalling which provision governs its disposition. Read each question for which document and which party is being asked about.

Is the exam hard?

Difficulty is relative to your existing code background. Inspectors who already work with aerospace procedures and records generally find the endorsement manageable; those coming only from D1.1 should budget extra time for qualification and documentation topics. AWS does not publish an endorsement-specific pass rate, so treat any figure you hear as unofficial.

What does it cost, and how long does it take?

AWS directs candidates to the AWS Program Price List for up-to-date pricing on all certifications, and the source does not state an endorsement-specific fee. Likewise, no endorsement-specific duration or turnaround is published. Confirm both through the Program Price List and your My AWS Portal account before scheduling.

Does the endorsement expire or need renewal?

AWS states that renewal and recertification rules depend on the specific credential, and that some require regular recertification while others do not expire if skills are maintained. For the SCWI path built from four endorsements, AWS lists renewal every 5 years and recertification every 10 years. Confirm your own credential's cycle in the portal.

Can I take training online instead of in person?

AWS offers education in dual-format in-person training, online instructor-led training, and self-paced online training. AWS also notes that while you cannot earn a welding certification fully online, you can take online training and exam preparation courses and then schedule your certification test at a Prometric computer-based testing facility.

How is the SCWI related to endorsements now?

AWS states the standalone SCWI exam is retired and that the new path is to complete four required endorsements: WPQ1, WPQ2, WCQA, and NDEC. The D17.1 aerospace endorsement is a separate code endorsement and is not one of those four, so plan your endorsements according to which credential you are actually pursuing.