Which statement best describes the relationship between door type and boarding aids?

Which statement best describes the relationship between door type and boarding aids?

• A. Type I doors use smaller stairs.
• B. Type I doors use passenger boarding bridges; Type II/III doors use smaller stairs or jet bridges.
• C. All doors use the same boarding aid.
• D. Jet bridges are never used with Type I doors.

Answer: (B)

Boarding aids are chosen to match the door height and alignment so passengers can board safely and smoothly. Type I doors are designed to connect with passenger boarding bridges, letting a jet bridge reach them easily. Type II and III doors sit at a different height or spacing, so they may require smaller stairs or, when available, a jet bridge that can reach their specific position. This relationship—door type guiding whether a jet bridge or stairs are used—best describes how boarding interfaces are paired with door design. The other statements don’t fit because Type I doors aren’t limited to smaller stairs, jet bridges aren’t excluded from Type I, and not all doors use the same boarding aid.

Boarding aids are chosen to match the door height and alignment so passengers can board safely and smoothly. Type I doors are designed to connect with passenger boarding bridges, letting a jet bridge reach them easily. Type II and III doors sit at a different height or spacing, so they may require smaller stairs or, when available, a jet bridge that can reach their specific position. This relationship—door type guiding whether a jet bridge or stairs are used—best describes how boarding interfaces are paired with door design. The other statements don’t fit because Type I doors aren’t limited to smaller stairs, jet bridges aren’t excluded from Type I, and not all doors use the same boarding aid.