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An overwing nacelle installation offers which advantage?

  • A.Lower interference drag than an underwing pod
  • B.Easier maintenance access
  • C.A smaller engine-out yawing moment
  • D.Ground clearance and noise shielding

Answer: D

Putting the engine above the wing keeps it well clear of debris and lets the wing screen the noise from the ground. The penalties are interference drag and awkward maintenance access, which is why the layout remains rare.

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