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An aircraft's design spectrum assumes \( 60\,000 \) flights. If it accumulates damage twice as fast as assumed, its structural life becomes about

  • A.120,000 flights
  • B.60,000 flights
  • C.15,000 flights
  • D.30,000 flights

Answer: D

Damage accumulating at twice the assumed rate halves the number of flights before the same total is reached, giving 30,000. The response is not necessarily retirement but a revised inspection programme reflecting the actual usage.

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