(1) Where the manufacturer proposes changes in the construction, plumbing, mechanical, or electrical equipment or installations or where these rules are amended to necessitate such change, one set of supplemental detailed plans and specifications of such changes shall be submitted to the bureau for plan checking and comparison. Plans shall be accompanied by a letter of transmittal and the plan inspection fee pursuant to ARM 24.301.565. When such supplemental details do not constitute a new model, the supplemental details will be filed with and become part of the existing plan review. Where the supplemental details constitute a model change, application for plan review is to be processed as for a new model.

(2) A model designation may be changed or added by filing an amended application and plan inspection fee pursuant to ARM 24.301.565.

(3) Where the manufacturer proposes changes to the quality control manual, one copy of such changes shall be submitted to the bureau for approval accompanied by a quality control manual inspection fee pursuant to ARM 24.301.567.