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Which statement about cabin altitude is TRUE?

  • A.A lower cabin altitude demands a greater differential
  • B.A lower cabin altitude demands a smaller differential
  • C.Cabin altitude equals cruise altitude
  • D.Cabin altitude has no structural consequence

Answer: A

Holding the cabin closer to sea level means a bigger gap from the thin air outside, and the shell carries that difference every flight. Composite fuselages tolerate the extra fatigue duty, which is why they offer a more comfortable cabin.

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