--- title: "MRB and dispositions: use as is, rework, repair, scrap" description: "How a material review board decides on nonconforming parts: use as is, rework, repair, return, regrade or scrap, and what AS9100 requires for each." image: https://factoryqa.com/hubfs/fqa-og-res-mrb-dispositions-guide.png --- [![FactoryQA](https://factoryqa.com/hubfs/fqa-logo-white.png)](https://factoryqa.com/) Features [**Platform overview**Every module, and how they connect](https://factoryqa.com/feature-overview)[**AI features**Purpose-built AI in every module](https://factoryqa.com/ai-powered-quality-management)[**Integrations**ERP connectors and imports](https://factoryqa.com/integrations) [**Dashboard**Every module in one scorecard](https://factoryqa.com/products/qualitybi-dashboard)[**Tasks**Every to-do, from every module](https://factoryqa.com/products/task-management)[**Compliance**Readiness for your standard](https://factoryqa.com/products/compliance)[**Quality Plans**Ballooning, PFMEA, control plans, PPAP](https://factoryqa.com/products/quality-plans)[**Documents**Revisions, approvals, sign-offs](https://factoryqa.com/products/document-control)[**Issues**NCRs, CAPAs and SCARs](https://factoryqa.com/products/non-conformance-management)[**Inspection**Sheets, first articles and SPC](https://factoryqa.com/products/inspection-sheets)[**Calibration**Gages, due dates and Gage R&R](https://factoryqa.com/products/calibration-management)[**Preventive Maintenance**Scheduled work orders and repairs](https://factoryqa.com/preventive-maintenance-factoryqa)[**Supplier Quality**Approved suppliers, portal and SCARs](https://factoryqa.com/products/supplier-management)[**Audits**Schedules, checklists and findings](https://factoryqa.com/products/audit-management)[**Learning Management**Courses, quizzes and the training matrix](https://factoryqa.com/products/learning-management-system)[**QMS Generator**Your manual from an interview](https://factoryqa.com/products/qms-generator) Services [**Services overview**Certification, consulting and supplier quality](https://factoryqa.com/services)[**Get Certified**Three paths to AS9100, ISO 9001 or ISO 13485: do it yourself, join a workshop, or work 1-1 with a consultant.](https://factoryqa.com/certification-services)[**Certification Workshops**A 9-week, small-group program with 18 expert-led sessions and an AI-built document kit.](https://factoryqa.com/certification-cohorts)[**QMS Consulting**A consultant on your team from training through implementation, internal audit and the registrar audit.](https://factoryqa.com/qms-consulting)[**Supplier Quality Services**Qualification, management, training and security services for your whole supply base.](https://factoryqa.com/supplier-quality-services) [Pricing](https://factoryqa.com/pricing) [Log in](https://app.factoryqa.com/auth/login)[Book a demo](https://factoryqa.com/get-a-demo)[Start free](https://app.factoryqa.com/auth/register) Features[**Platform overview**](https://factoryqa.com/feature-overview)[AI features](https://factoryqa.com/ai-powered-quality-management)[Integrations](https://factoryqa.com/integrations)[Dashboard](https://factoryqa.com/products/qualitybi-dashboard)[Tasks](https://factoryqa.com/products/task-management)[Compliance](https://factoryqa.com/products/compliance)[Quality Plans](https://factoryqa.com/products/quality-plans)[Documents](https://factoryqa.com/products/document-control)[Issues](https://factoryqa.com/products/non-conformance-management)[Inspection](https://factoryqa.com/products/inspection-sheets)[Calibration](https://factoryqa.com/products/calibration-management)[Preventive Maintenance](https://factoryqa.com/preventive-maintenance-factoryqa)[Supplier Quality](https://factoryqa.com/products/supplier-management)[Audits](https://factoryqa.com/products/audit-management)[Learning Management](https://factoryqa.com/products/learning-management-system)[QMS Generator](https://factoryqa.com/products/qms-generator) Services[**Services overview**](https://factoryqa.com/services)[Get Certified](https://factoryqa.com/certification-services)[Certification Workshops](https://factoryqa.com/certification-cohorts)[QMS Consulting](https://factoryqa.com/qms-consulting)[Supplier Quality Services](https://factoryqa.com/supplier-quality-services)More[**Pricing**](https://factoryqa.com/pricing)[Log in](https://app.factoryqa.com/auth/login)[Book a demo](https://factoryqa.com/get-a-demo) Guide # MRB and dispositions: use as is, rework, repair, scrap How a material review board decides on nonconforming parts: use as is, rework, repair, return, regrade or scrap, and what AS9100 requires for each. FactoryQA quality teamNovember 12, 2026 When parts fail to meet a requirement, someone has to decide what happens to them. In a small shop that might be the quality manager and an engineer at a bench; in a larger one, a formal material review board (MRB). Either way, the decision, the reason and the authority behind it have to be on record, because auditors and customers will ask. Part found nonconformingTag and quarantineMRB reviews the evidence**Can it be made to conform?** Yes · rework, then inspect againNo · repair or use as is with authorization, return or scrap ## Contain first Tag the parts as nonconforming and move them to a quarantine area, or block them in your system, so they cannot be used or shipped by mistake. Check where else the same problem could be: work in process, finished goods, shipments already sent. Then open the NCR with the facts: part, revision, lot, quantity, requirement, actual result and photos. ## Who sits on the MRB Typically quality and engineering, with production or purchasing when it helps. The people who can approve a disposition should be named in your procedure. In aerospace and defense, a disposition that accepts a part outside its requirements usually needs the design authority's approval, which is often your customer. ## The dispositions | Disposition | What it means | What it needs | | --- | --- | --- | | Use as is | Accept the part as it is, although it does not meet the requirement | An engineering justification that fit, form and function are not affected, and the customer's or design authority's approval where required | | Rework | Bring the part into full conformance with the original requirement | An approved rework method and re-inspection of the reworked feature | | Repair | Make the part acceptable for use, though it still does not meet the original requirement | An approved repair procedure and the same approvals as use as is | | Return to supplier | Send purchased parts back for replacement, credit or rework | A supplier NCR or SCAR when the problem is serious or repeated | | Regrade | Use the part for a different application whose requirements it does meet | Clear re-identification so it cannot go back to the original use | | Scrap | Destroy the part | Marking or control until it is physically unusable, so it cannot re-enter the supply chain | The difference between rework and repair matters: reworked parts conform, repaired parts do not. That is why repair, like use as is, needs authorization. ## What AS9100 adds AS9100 clause 8.7 tightens the general ISO 9001 rules on nonconforming outputs. Use as is and repair dispositions are allowed only when authorized by the design organization, which may be your customer. Product released under a concession needs customer authorization. Scrapped product must be conspicuously marked or positively controlled until it is physically rendered unusable. And when nonconforming product may already have been delivered, you must tell the customer and others affected. ## Writing a use-as-is justification A good justification answers, in writing: - Which requirement is not met, by how much, on how many parts - Why the deviation does not affect fit, form, function, safety or interchangeability, with evidence (tolerance stack, mating part data, test results) - Who approved it, including the customer or design authority where required, and the approval reference - Whether it covers only these parts or a period of time (a deviation or concession), and when it expires - Whether a corrective action was opened to stop it happening again ## Count the cost Record scrap cost, rework cost and labor hours on every NCR. Added up, they are your cost of poor quality, the number that justifies corrective actions and process improvements to management. Our guide to [NCR, CAR, SCAR, CAPA and 8D](https://factoryqa.com/resources/scar-vs-car-vs-capa-vs-8d) explains when a disposition is not enough and a corrective action is needed. Issues in FactoryQA: containment, MRB disposition and corrective action on one record. In FactoryQA an issue records containment checks (inventory, work in process, incoming, quality alert, recall notice) and the MRB disposition: Scrap, Rework or Use As Is, with the reason, the rework order, scrap and rework cost and labor hours, which add up to cost of poor quality. Each approver signs off on their row, and waivers are attached to the record. Deviations, temporary or permanent, live in Quality Plans with their own approvers and dispositions, including return to supplier and sort. See [Issues](https://factoryqa.com/products/non-conformance-management). ## Frequently asked questions ### What is an MRB in manufacturing? A material review board: the people authorized to decide what happens to nonconforming material, usually quality and engineering, sometimes with production, purchasing or a customer representative. ### What is the difference between rework and repair? Rework brings the part into full conformance with the original requirement. Repair makes it acceptable for use while it still does not meet the original requirement, so it needs authorization like use as is. ### Does use as is need customer approval? Under AS9100, use as is and repair dispositions need authorization from the design organization, which is often the customer. Your contract and the customer's requirements decide; many prohibit it without written approval. ### What is the difference between a deviation and a concession? Terms vary by customer. A deviation is usually permission, given before production, to depart from a requirement for a set quantity or time. A concession usually accepts product already made that does not conform. Follow your customer's definitions. ### What must happen to scrapped parts in aerospace? They must be conspicuously and permanently marked, or positively controlled, until they are physically rendered unusable, so they cannot re-enter the supply chain. Keep reading ## More from Resources [Supplier quality**AS9100 8.4.3 flow-down: what your purchase orders must say**What AS9100 clause 8.4.3 says to flow down to suppliers, with sample purchase order quality clauses and the DFARS, CMMC and ITAR clauses that often apply.](https://factoryqa.com/resources/as9100-flow-down-requirements)[Supplier quality**Incoming inspection for machine shops**A receiving inspection procedure for machine shops: paperwork checks, risk-based sampling with Z1.4 or c=0 plans, accept or reject, and supplier feedback.](https://factoryqa.com/resources/incoming-inspection-procedure)[Guide**AS9102 Form 3, field by field (Rev C)**How to fill in AS9102 Form 3 field by field for Rev C: characteristic numbers, requirements, results, tooling and NCR numbers, plus partial FAI rules.](https://factoryqa.com/resources/as9102-form-3-guide) ## Try it on your own process: start free. 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