Which of the following best describes narrow body aircraft?

Narrow body aircraft are characterized primarily by their fuselage design, which typically has a width ranging from 10 to 13 feet. This design allows for a single aisle configuration and is commonly used for short to medium-haul flights. The narrower fuselage limits the seating arrangement, accommodating a maximum of about six seats across the cabin, making it suitable for airlines focusing on high-density routes where efficiency is important.

The definition of narrow body aircraft highlights the crucial aspect of fuselage width since it directly influences the aircraft's overall passenger capacity and layout. In contrast, broader fuselage dimensions or multi-aisle configurations relate to wide body aircraft, which serve different operational purposes aimed at longer flight distances and greater capacity. Understanding these specifications aids in distinguishing between aircraft types, which is a foundational concept in aviation training and operations.