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An aircraft with a maximum take-off weight of \( 90 \) t has a maximum landing weight of \( 0.85 \) of it. The landing limit is

  • A.81 t
  • B.72 t
  • C.76.5 t
  • D.90 t

Answer: C

Correct answer: 76.5 t

\[ 0.85 \times 90 = 76.5\ \text{t.} \] The landing limit is below the take-off limit because the undercarriage and its backup structure are sized for touchdown at a given sink rate, and designing them for the full take-off weight would cost weight the aircraft carries on every flight for a case that arises only in an emergency - which is why an overweight landing needs fuel jettison or an inspection afterwards.

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