Structural Safety Factors for Flight Critical Components

In plain language

For BVLOS operations, CAAS expects your drone's critical structures to handle static loads with a safety factor of 1.25 and dynamic loads with a factor of 1.5. Higher safety factors apply to specific parts like control hinges, joints, and composite materials.

Requirement as structured

CAAS states that all flight critical components and structures must be able to withstand static loads by a safety factor of at least 1.25 and dynamic loads by 1.5, with additional special factors applied to specific components like bearings, joints, and composite structures.

Original regulatory text

All flight critical components and structures, whereby failure would lead to a hazardous or catastrophic failure condition, should be able to withstand all static and dynamic loads (based on the intended concept of operations), by a safety factor of at least 1.25 for static load and 1.5 for dynamic loads... MS2 For all flight critical components and structures, the safety factor as identified in BS1 should be multiplied by an additional special factor in the following cases: i) 2.0 on bearings at bolted or pinned joints subjected to rotation ii) 4.45 on control surface hinge-bearing loads iii) 2.2 on push-pull control system joints iv) 1.5 for attachments in frequently assembled and disassembled structural parts v) 1.2 for composite structures

Applies when

operation

BVLOS