What is the weight of the B-2 work stand primarily used for?

The B-2 work stand is primarily used for heavy maintenance on the aircraft. This type of maintenance involves extensive inspections, repairs, and replacements that require a sturdy and reliable platform to ensure the safety of personnel and the integrity of the work being performed on the aircraft. Heavy maintenance tasks may include access to the aircraft's engines, structural components, and major systems, which often necessitate the use of a work stand designed to support significant weight and provide stability.

Routine inspections typically involve lesser maintenance tasks that do not require the heavy-duty capabilities of the work stand. Environmental testing focuses on evaluating the aircraft’s performance under various conditions rather than direct repair or maintenance activities, and fuel system repairs may only require access to specific components, not the comprehensive support provided by the work stand used for heavy maintenance. Therefore, the correct indication of the work stand's primary purpose aligns with the comprehensive needs of heavy maintenance.