MRBdoc

MRB document

1. (a) What is a Material Review Board (MRB)?
The Material Review Board (MRB) team generally consists of subject matter
experts (SMEs) from various fields such as quality, design, stress,
manufacturing, planning etc. This type of a team is called a cross functional
team. The role of the Material Review Board (MRB) team is to generally meet
on a regular basis (weekly or monthly).
They go through each critical deviation that cannot be dispositioned outside
the MRB board. Such deviations do not conform to a standard or specification
that a particular part, assembly or their associated materials are required to
conform to. Then the team decides what to do with that non conformity. These
kinds of deviations are generally documented in a tracking document called the
Non Conformity Report (NCR), each such deviation may have its own NCR
that needs to be approved for the product to move through.
Once the team analyzes the NCR, a suitable disposition is made to proceed
further, common dispositions are listed below:
Typical Material Review Board (MRB) Dispositions:
 Use As Is: Use the part or material in its current state of deviation without any
change
 This disposition is only made after confirming that the form fit or function of
the component or assembly is not affected by the NCR discrepancy
 Example: A part's critical dimension was undersized by the technician or
machinist, for example a radius feature, but the feature is in a remote non
critical location as assessed by stress
 Repair or Rework: The component can be reworked or repaired to bring it
into a conforming state
 This disposition is only made after sufficient stress analysis is conducted so
that the reworked component is adequate to comply with all applicable
regulations and applied loading
 Example: A vendor component was received with a larger fillet radius than
required on the face of a drawing. This component can be reworked to
conform to the drawing so it can be used in the production line
 Scrap: The part has to be scrapped or discarded

2.  This is typically done when the component includes a critical flaw in a critical
area that is insufficient and cannot be reworked
 Example: A composite part is received with a crack at a critical bend radius
that is highly loaded
 Note that such gross deviations are generally not common when dealing with
reputable part manufacturers as there are strict quality control practices in
place to prevent slipping of such a part out to a customer, so this case was only
provided as an example
 Other examples may include a part made from an inferior material than
required, a feature too thin, a hole too large , an edge distance too small, a
defect too large that affects life limits etc.
(b) Stress Material Review Board: Other Duties
In addition to what we discussed above, a stress engineer who is part of a
material review board (MRB) is also called into action for other related
activities.
Materials and Process Specifications (MP&S) Support:
Generally speaking, at least as far as I know, there is either a separate
department or a separate SME that deals with MP&S activities. However, there
may be situations where the MP&S SME may need stress support. Sometimes
a material specification may not be available and an alternate specification
may be suggested by a vendor with inferior strength properties. As a member
of the Material Review Board, a stress engineer would support him or her with
appropriate stress analysis as required by the MP&S SME to disposition a
specific materials related MRB issue.
Field Support:
More often than not, there will be issues that come up from field service of an
aircraft. These issues are generally related to corrosion, cracking, repairs etc.
Again, the stress engineer is the go to person to support the repair reports and
substantiation.
Production Support:

3. As the product is moving through the production line, inevitably some
technician is bound to oversize a fastener hole, or mess up a dimension on a
critical part etc. The stress engineer is critical in these situations to support that
NCR and move things forward.
Aircraft on Ground (AOG):
This is similar to field support, except that the aircraft is now inoperable due to
the issue that requires immediate attention. This can be a repair that is critical
for flight safety. The stress engineer is generally expected to give top priority
to AOG issues as the customer is waiting for the issue to be resolved
immediately.
Conclusion:
As you know, a development environment is a bit different than an MRB type
environment in terms of stress engineering. Generally there is a little more
time in a development environment. But as we can see from the above
situations, MRB engineers are typically under greater stress, aggressive
deadlines and pressure. But for someone that enjoys this kind of stuff it can be
a rewarding experience, because guess what, you are someone that can save
the day in rough waters for the company.

Material Review Board: Definition And Benefits
The Material Review Board (MRB) is just a team of experts within a wide range of areas that
include planning, manufacturing, stress, design, quality, among many others. This is what is
called a cross-functional team and the Material Review Board usually meets on a weekly or
monthly basis.

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The main goal of the Material Review Board is to meet to decide about any critical deviation
that can’t be dispositioned outside this group. One of the things that you need to understand
is that we just can’t define these deviations in a specific way. All we can say about them is that

4. they do not conform to a specification or standard of a specific assembly, part, or the
materials that are associated.
When the Material Review Board meets, they will then decide about what they will do with
the non-conformity. The Material Review Board will begin by documenting the non-conformity
that was discovered in a Non-Conformity Report (NCR) which is simply a document that allows
the tracking of all the deviations. Each NCR reports only one deviation.

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The job of the Material Review Board is then to analyze the NCR and they then decide about
what they need to do. Here are the options:
#1: Use As Is:

The first option that the Material Review Board can make is to state that the material or part
should continue to be used without any change.

The Material Review Board can only apply this disposition after they confirm that the part or
material won’t affect the rest of the process in any way.

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#2: Repair Or Rework:

The second option that the Material Review Board can is to order for the part or material to be
repaired so it can be used again.

In order to make this decision, the Material Review Board needs to first confirm that the part
is able to handle all the stress during the process and that it will be able to comply with all the
regulations.
The last option that the Material Review Board has is to simply discard or scrap the part.
Usually, this is the last option that the Material Review Board decides to take since it means
that the part or material includes a major flaw that just can’t be reworked or repaired and
can’t be used as is without interrupting the process.

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5. While it may seem that the Material Review Board isn’t really a crucial piece within your
organization, you should consider this better. After all, including a Material Review Board
within your organization can bring a lot of benefits to the organization that include:


 The improvement of the process by knowing the causes and the rework rates.
 The shipping of the products will be done sooner.
 There is a save in time and cost to process rework.
 It makes the determination of the labor costs of rework easier and more transparent.
 You will have real-time data about the parts that need to be reviewed and that are
designated for rework as well as you will know where these parts are in the rework
process.

Material Review in Quality Control
Material Review is the reflection and review of direct and indirect materials that are in the final
products. Material Review is the overlook of the materials as they are inputted during production and the
checks and balances associated with ensuring all parts are identical and has minimal variation between all entire
pool of units in production.
Quality Control is the review of everything involved in production, from job and resource management to
specific testing of production, to decision making and analysis completed through testing.
Purpose of Material Review and Quality Control is to ensure the realiability of the individual units that are
produced to allow safe and intended use and delivery of products. All varying units that require additional
review for continuity to determine acceptability/non-acceptability or further analysis.

Responsibility/Accountability within Montage

Personnel in Charge Responsibility
Subcontractor Identify, reports and segregates varying and non-complying
parts/materials
Material Review Board Member Evaluates varying parts impact and possible effects on entire
production
VP of Operations Gives final approvals on MRB decisions and outlook on
decisions made from CEO

6. Quality Engineer Gives broader view from CEO's perspective
Makes decisions alongside MRB members

Montage subcontracts production to businesses that provide production and assembly to smaller
individual electronic wafer production teams. and later brings these units/task together via turnkey servicing.
Subcontractors are thus needed to inform Montage of parts that do not meet the standared quality control
requirements. Montage eventually monitors the performance and accuracy of these untis periodically.



Process Description/Action Responsible
Personnel
Initiate MRB  For nonconforming products at subcontractor
site, initiated by product engineers, packing
engineers or quality control engineers
 For nonconforming product or discrepant
materials from Review Material Authorization,
initiation is with quality engineers
 For "Engineering Lots", intiator is Material
planner
Initiator

7. Assign MRB #
and rout MRB
disposition
 Review the MRB for accuracy and sufficient
details to ensure the problem is clearly known.
 Assign a MRB number.
 Determine appropriate members and understand
task needed to be completed by each member.
 Send material list to the groups which is needed
for disposition and approval.
Quality Engineer
Investigate and
complete
disposition
 Evaluate discrepancy's and possible impact of
production, processing, reliability and obligation
to customers.
 Understand actions needed to be taken on effected
areas and instructions related to the issue or
nonconformance in the MRB forms.
 Possible dispositions:
o Re-work/re-screen
o Use-as is
o 'Scrap'
o Quarantine
MRB Members
Obtain approval  Review and finalize decision
 Add appropriate notes where corrective action is
required for further decision.
 If any group in MRB members feel approval is
not valid, they must contact quality engineer to
resolve the issue; cancelation can only come from
quality engineer.
Quality Engineer
Perform
disposition
 Complete disposition in MRB.
 If the decision is to quarantine units, the units will
be placed in correct area for Quarantine section.
 If decision is to 'scrap' units, then quality engineer
works with operations to scrap material physically
and in system.
 If decision is to re-work/re-screen units, re-
verification and testing must be performed.
Responsible Group
(varies)
Filing and report  Original filing is completed in MRB master file
and recorded on the final log.
Quality Engineer