Test yourself: 5 hard theory questions, free Airspace, weather, regs and aerodynamics, FAA-style — instant score, every answer explained. No signup.
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Fatigue cracks in aircraft structures typically initiate at:
A
Stress concentration points such as rivet holes, notches, and cutouts
B
The center of structural members
C
The thickest part of the skin
D
Leading edges only
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See where you stand: 5 hard questions, instant score, every answer explained.