Which statement best defines a Narrow Body aircraft?

Which statement best defines a Narrow Body aircraft?

• A. Aircraft designed with a single engine.
• B. Aircraft designed with a single aisle.
• C. Aircraft designed with two decks.
• D. Aircraft designed with multiple aisles.

Answer: (B)

Narrow-body design is defined by the cabin layout, specifically having a single passenger aisle. That single-aisle configuration is what distinguishes narrow-body jets from wide-body jets, which typically have two aisles and higher capacity. The number of engines, the presence of a second deck, or having multiple aisles does not define whether an aircraft is narrow; many narrow-body models are twin-engine and single-deck, and only wide-body aircraft usually feature two aisles. So the best statement is that a Narrow Body aircraft is designed with a single aisle.

Narrow-body design is defined by the cabin layout, specifically having a single passenger aisle. That single-aisle configuration is what distinguishes narrow-body jets from wide-body jets, which typically have two aisles and higher capacity. The number of engines, the presence of a second deck, or having multiple aisles does not define whether an aircraft is narrow; many narrow-body models are twin-engine and single-deck, and only wide-body aircraft usually feature two aisles. So the best statement is that a Narrow Body aircraft is designed with a single aisle.