STRUCTURAL LOAD PATH
Primary and Secondary Structure
General distinction between principal load-carrying and supporting structure.
Key reference points
- Primary structure carries significant flight, ground or pressurization loads.
- Secondary structure supports shape, systems or local functions.
- The type-design holder defines the formal classification for each item.
Training-reference boundary
This summary is not approved repair or maintenance data. Do not inspect, classify, select material, alter structure or perform a repair from this page alone. Use the current applicable SRM, AMM, engineering order, drawing and company procedures.