Which doors have single-lane slides/liferafts?

Which doors have single-lane slides/liferafts?

• A. 1L/R and 3L/R
• B. 2L/R and 4L/R
• C. All doors
• D. None, all are double-lane

Answer: (A)

Single-lane slides means only one evacuation path comes from that door, while double-lane slides provide two parallel paths to evacuate more people quickly. On the 787, the forward doors (the first pair on each side) and the third pair (counting from the nose) are equipped with a single slide per door. The doors in the second and fourth positions have two slides in one door unit, giving two evacuation lanes. This setup is driven by the aircraft’s certification and cabin layout: the forward and third doors are configured to meet the required exit capacity with one lane, while the second and fourth doors are sized to deliver extra capacity when needed. So the doors with single-lane slides are the front and the third pair, while the others have double-lane slides to boost evacuation capacity.

Single-lane slides means only one evacuation path comes from that door, while double-lane slides provide two parallel paths to evacuate more people quickly. On the 787, the forward doors (the first pair on each side) and the third pair (counting from the nose) are equipped with a single slide per door. The doors in the second and fourth positions have two slides in one door unit, giving two evacuation lanes.

This setup is driven by the aircraft’s certification and cabin layout: the forward and third doors are configured to meet the required exit capacity with one lane, while the second and fourth doors are sized to deliver extra capacity when needed. So the doors with single-lane slides are the front and the third pair, while the others have double-lane slides to boost evacuation capacity.