496  Approved for public release. OTR 2020- 00294  Perhaps the next most significant change that users of the new MMA standard will notice is the elimination  of the “shall, where practical” weighting level of requirements. These requirements were deemed to be  unverifiable and thus , difficult to enforce. A concerted parsing effort was launched to identify each of these   approximately 90 instances in the standard, and to either upgrade each occurrence to a “shall” weighting  level requirement, or downgrade it to a “should” weighting level for best practice or guidance. An additional  goal of this parsing effort was to ident ify all of the  requirements that were vaguely worded or non- verifiable.  For example, approximately 40 additional requirements  that used terms such as “shall be considered” or  “shall be minimized” were found and corrected or modified . 

Overall, more than 350 comments and requests for revisions  were compiled by the government and industry  committee working on this revision. Each comment was discussed and adjudicated by consensus . The  comments fell within three broad categories: testing related , non- testing related , or parsing to eliminate all  instances of the “shall, where practical” weighting level  and other vague requirements . This paper will  summarize the more significant changes that are expected to be published in AIAA S -114A.  

The MMA Update Process and Industry Committee  

Starting at a low -level of effort in 2014, the authors of this paper reviewed the material in the previous  standard that had been repeatedly identified as credibly contentious, outdated, or troublesome, based on  repeated mutual experience in program tailoring efforts , hardware testing campaigns,  and day -to-day  discussions  and working- level meetings with customers and space and launch vehicle organizations . These  items were categorized into three areas:   • The “shall, where practical” weighting factor   • The clarity , sequence/flow,  and completeness of the testing section   • Other items identified as needing timel y updates or matur ation , based on real -life experience since  the last standard’s release   All items of all categories were compiled into a comment resolution  matrix (CRM) in a spr eadsheet format  (see Figure 1 for sample excerpt) in order  to track what the original and proposed change to the text was,  and the rationale for changing it .  

Figure 1. Sample CRM entries   The authors proposed many of the initial changes in the text  of the new draft MMA standard document ,  where l ittle or no contention among stakeholders or user s of the standard was expected. Some examples  of these were typographical and grammatical errors, practices that were no longer supported or followed  by the bulk of the industry, etc . Other, more significant , proposed changes were left open- ended in the CRM  for future resolution and adjudication by an indus try committee of mechanisms subject matter experts.  Comment  AuthorOrganization Section SubjectComment  TypeExisting Content /text Proposed content/text Rationale Committee Discussion Comments Committee  DispositionVerified as  Implemente d?    Comments and Recommended Changes BoesigerLockheed  Martin Space8.1.2 Technical at the vehicle test level at the vehicle test level if  accessiblecannot see them all at vehicle level Accepted Yes Brandan  RobertsonNASA8.1.2.c Typical  inspection  elementsTechnical fastener torque - torque  on pre-selected fasteners  before and after exposure  to each environmental test conditionfastener torque - torque on preselected fasteners or a check of  torque striping  before and after  exposure to each environmental test conditionTorque striping is a simple,  inexpensive, and effective check on  fastener loosening that is for some  reason often overlooked.Consider incorporating this into re-write as  described in comment 29. (maybe add  "where used")  See proposed language in comment 89Accepted  with Changes Yes D. SheltonLockheed  Martin Space8.2Test  Instrumentat ionTechnicalTest instrumentation  should be calibrated in  place through the test  electronics and in the  environmental conditions  of the test.DeleteTest instrumentation may be fully  calibrated or may be reference only for  a development test.  Calibration should  be covered in general up front in the  document.Test instrumentation SHALL be calibrated  consisent with  the environmental conditions of the test.Accepted  with Changes Yes Mark  BalzerJPL8.2 Torque  checksTechnical ? Duplicate of other comments (e.g. 30) Rejected Yes