{"id":23945743,"date":"2023-12-21T21:10:11","date_gmt":"2023-12-21T20:10:11","guid":{"rendered":"https:\/\/www.eqmc-consulting.de\/project\/re-design-of-a-cabin-pressure-management-system\/"},"modified":"2026-06-12T12:44:19","modified_gmt":"2026-06-12T11:44:19","slug":"re-design-of-a-cabin-pressure-management-system","status":"publish","type":"project","link":"https:\/\/www.eqmc-consulting.de\/en\/project\/re-design-of-a-cabin-pressure-management-system\/","title":{"rendered":"Bringing a redesigned cabin-pressure system to certification \u2014 within the constraints of a B737 MAX programme schedule"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#D9EFFA&#8221; bottom_divider_flip=&#8221;horizontal&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][dipi_divider content_text=&#8221;Aviation&#8221; content_text_tag=&#8221;h1&#8243; items_alignment=&#8221;left&#8221; hide_second_element=&#8221;on&#8221; first_decoration_style=&#8221;image&#8221; decoration_first_image=&#8221;https:\/\/www.eqmc-consulting.de\/wp-content\/uploads\/BernhardBals-Symbol.png&#8221; first_decoration_width=&#8221;32px&#8221; content_padding=&#8221;5px|10px|5px||true|false&#8221; first_decoration_padding=&#8221;0px|10px|0px|0px|false|false&#8221; first_decoration_bg_color=&#8221;RGBA(255,255,255,0)&#8221; _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;|700|||||||&#8221; text_text_color=&#8221;#F26B27&#8243; text_font_size=&#8221;18px&#8221; text_line_height=&#8221;1.7em&#8221; background_color=&#8221;#F9F9F9&#8243; custom_padding=&#8221;|15px||15px|false|true&#8221; border_radii=&#8221;on|100px|100px|100px|100px&#8221; global_colors_info=&#8221;{}&#8221;][\/dipi_divider][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; header_2_text_color=&#8221;#0C2A45&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Bringing a redesigned cabin-pressure <strong>system to certification<\/strong> \u2014 within the constraints of a B737 MAX programme schedule<\/h2>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; disabled_on=&#8221;off|off|off&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||-180px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_text_color=&#8221;#0C2A45&#8243; header_2_font_size=&#8221;21px&#8221; background_color=&#8221;#F9F9F9&#8243; custom_padding=&#8221;30px|30px|30px|30px|true|true&#8221; border_radii=&#8221;on|6px|6px|6px|6px&#8221; box_shadow_style=&#8221;preset3&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><strong>Project details<\/strong><\/p>\n<p>Customer: Nord-Micro GmbH &#038; Co. KG<\/p>\n<p>Branch: Aviation<\/p>\n<p>Period: 09\/2017 &#8211; 05\/2020<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.23.1&#8243; _module_preset=&#8221;default&#8221; custom_css_free_form=&#8221;body {||    -ms-hyphens: auto;||    -webkit-hyphens: auto;||    hyphens: auto;||}&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row column_structure=&#8221;1_2,1_2&#8243; use_custom_gutter=&#8221;on&#8221; make_equal=&#8221;on&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; custom_margin=&#8221;50px||||false|false&#8221; sticky_enabled=&#8221;0&#8243;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;30px|30px|30px|30px|true|true&#8221; border_radii=&#8221;on|6px|6px|6px|6px&#8221; border_width_all=&#8221;2px&#8221; border_color_all=&#8221;#0C2A45&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.23.1&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_text_color=&#8221;#0C2A45&#8243; header_2_font_size=&#8221;28px&#8221; custom_margin=&#8221;||20px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>The challenge<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.23.1&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>My customer <strong>redeveloped the cabin pressure control system<\/strong> for the commercial aircraft <strong>B737 MAX<\/strong>.<\/p>\n<p>Certification depended on one critical question: which verification evidence from the existing B737 platform remained valid for the redesigned system, and which evidence had to be generated again? The programme schedule did not allow for full re-verification. <\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;30px|30px|30px|30px|true|true&#8221; border_radii=&#8221;on|6px|6px|6px|6px&#8221; border_width_all=&#8221;2px&#8221; border_color_all=&#8221;#0C2A45&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_text_color=&#8221;#0C2A45&#8243; header_2_font_size=&#8221;28px&#8221; custom_margin=&#8221;||20px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Cooperation<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Over the course of a few months, <strong>I reviewed more than 2,500 requirements<\/strong> and assessed the applicability of existing B737 verification evidence to the redesigned system.<\/p>\n<p>The result was a <strong>clear and solid verification scope<\/strong> that distinguished, requirement by requirement, between evidence that remained valid and evidence that had to be recreated.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#F9F9F9&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;fc1a7e47-b83c-4553-a2f0-180d5d9d58f9&#8243; text_orientation=&#8221;center&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>What we have achieved<\/h2>\n<h3><strong>Project results<\/strong><\/h3>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_3,1_3,1_3&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_blurb title=&#8221;Project goal achieved&#8221; use_icon=&#8221;on&#8221; font_icon=&#8221;&#x4e;||divi||400&#8243; _builder_version=&#8221;4.23.1&#8243; _module_preset=&#8221;0340ce56-14e0-4763-a3fc-48fb5c978b24&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p class=\"p1\"><strong>More than 2,500 complex requirements<\/strong> and their verification evidence had been evaluated within a few months, and my customer had a <strong>complete overview<\/strong> of the <strong>compliance status of the system<\/strong> and its components.<\/p>\n<p>[\/et_pb_blurb][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_blurb title=&#8221;Clear structure&#8221; use_icon=&#8221;on&#8221; font_icon=&#8221;&#xf0c0;||fa||900&#8243; _builder_version=&#8221;4.23.1&#8243; _module_preset=&#8221;0340ce56-14e0-4763-a3fc-48fb5c978b24&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>At the end of the assignment, all <strong>Lessons Learned<\/strong> from the project and the project results were <strong>clearly communicated to the involved employees<\/strong>, so that they can also benefit from them in future projects.<\/p>\n<p>[\/et_pb_blurb][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_blurb title=&#8221;Confidence for implementation&#8221; use_icon=&#8221;on&#8221; font_icon=&#8221;&#xf3ed;||fa||900&#8243; _builder_version=&#8221;4.23.1&#8243; _module_preset=&#8221;0340ce56-14e0-4763-a3fc-48fb5c978b24&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p class=\"p1\">After the collaboration, my customer had <strong>clarity<\/strong> on which verification documents were still valid for the revised system. With that, they <strong>knew what to do<\/strong> in order to <strong>deliver the revised system on time<\/strong>.<\/p>\n<p>[\/et_pb_blurb][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_button button_text=&#8221;Arrange a free check-in meeting&#8221; button_alignment=&#8221;center&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;c892fb66-996f-4d6a-a73c-f78c4e865adb&#8221; button_border_radius=&#8221;100px&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>My customer redeveloped the cabin pressure control system for the commercial aircraft B737 MAX.<\/p>\n<p>My task was to clarify the scope of verification in order to bring the system to certification safely and effectively within a tight schedule. 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