On the 764 model, which doors have single lane slides?

On the 764 model, which doors have single lane slides?

• A. Doors 3L/R
• B. Doors 1L/R
• C. Doors 2L/R
• D. Doors 4L/R

Answer: (A)

A single-lane slide means only one evacuation path is available through that door, so the door’s exit capacity is lower than a door with a double lane. The 764’s aft doors are equipped with these single-lane slides, chosen to save weight while still meeting the required evacuation time when combined with the other exits. The front and middle doors, by contrast, use double-lane slides to increase overall exit capacity where more people may be evacuating through multiple doors simultaneously. So the rear pair of doors are the ones with single-lane slides.

A single-lane slide means only one evacuation path is available through that door, so the door’s exit capacity is lower than a door with a double lane. The 764’s aft doors are equipped with these single-lane slides, chosen to save weight while still meeting the required evacuation time when combined with the other exits. The front and middle doors, by contrast, use double-lane slides to increase overall exit capacity where more people may be evacuating through multiple doors simultaneously. So the rear pair of doors are the ones with single-lane slides.