Discovery Main Landing Gear Dynamic Seal Installed Incorrectly

Lack of adequate detail on the landing gear installation drawings contributed to the incorrect installation of the Orbiter right Main Landing Gear (MLG) hydraulic seal. The installation drawing that showed the detail for the dynamic seal was owned by the seal manufacturer, not the landing gear manufacturer. To reduce human errors during parts installation, parts should be marked to show installation order and proper orientation. Update engineering drawings to show sufficient detail of piece part installations.

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