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Discussion

Widespread fatigue damage refers to

  • A.Corrosion across the whole airframe
  • B.Damage caused by a bird strike
  • C.Many small cracks that could link up
  • D.A single large crack in one member

Answer: C

As an airframe ages, cracks appear at many nominally identical details at once, and the remaining ligaments between them can fail progressively. It undermines the fail-safe assumption that one crack is present at a time, and it is why ageing aircraft receive special attention.

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