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Toilet waste goes into a holding tank on the plane. It’s impossible for the tanks to be dumped mid-flight because the valves are located outside the plane.

Vacuum toilet systems take advantage of the pressure differential between the cabin and the exterior environment, which is important for both passenger safety and proper toilet operation.

Since the early 1980s, planes have been using toilets that have a vacuum toilet system. This means a pneumatic vacuum is used to pull the contents inside the toilet bowl down.

Toilet waste goes into a holding tank on the plane. It’s impossible for the tanks to be dumped mid-flight because the valves are located outside the plane.

Since the early 1980s, planes have been using toilets that have a vacuum toilet system. This means a pneumatic vacuum is used to pull the contents inside the toilet bowl down.

Toilet waste goes into a holding tank on the plane. It’s impossible for the tanks to be dumped mid-flight because the valves are located outside the plane.

Toilet waste goes into a holding tank on the plane. It’s impossible for the tanks to be dumped mid-flight because the valves are located outside the plane.