Structural Classifications

Question 1

What are the 3 structure types?

Answer 1

-primary
-secondary
-tertiary

Question 2

Define primary structure?

Answer 2

Any part of the framework that should it fail could lead to
-loss of control over aircraft
-harm to occupants
-unintended operation
-catastrophic structural collapse
-failure of power unit
-incapability to perform a service

Question 3

Define secondary structure?

Answer 3

All non-primary STRUCTURAL components

Question 4

Define tertiary structure?

Answer 4

Remaining elements of the aircraft’s framework that are lightly stresses like fairings and various support brackets etc