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An ICAO Code C gate limits span to \( 36 \) m. A wing of \( 40 \) m span must fold at least

  • A.2 m per side
  • B.4 m per side
  • C.1 m per side
  • D.8 m per side

Answer: A

Correct answer: 2 m per side

The span must be reduced by 4 m in total, and a wing folds symmetrically:

\[ \frac{40 - 36}{2} = 2 \text{ m per side} \]

Taking the whole 4 m from one side would give an asymmetric aircraft on the ground and is not what is meant. Two metres per side is a modest fold, which keeps the hinge outboard where the loads and the structural depth are small.

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