Do planes empty their toilets over the ocean?

No. There is no mechanism that allows the crew to dump the contents of the lav holding tank. It is possible that a fault in the system could result in waste going overboard, but such incidents are very rare. See What happens when you flush the toilet on an airplane?



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What happens if you flush a toilet's tank in an airplane while sitting on it? Absolutely nothing. Your arse might ache a bit afterwards. Stories about people being sucked through the toilet and flushed out the plane are urban legends.

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Airline pilots take turns using the bathroom nearest the cockpit during a flight. There are no bathrooms installed in the cockpit. For airplanes with a single pilot, diapers, catheters, or collection devices are used if they are unable to land to use the airport bathroom.

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Airplane toilets use little water so that there's nothing to splash around mid-flight. Although there is water in the toilet bowl, it is only there to clean it for the next person. The vacuum system does all the work.

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The engines would still be ripped off, baggage hold doors would most likely open on impact. There would have to be some kind of debris field. The plane would sink, but not intact. Something would come free and float to the surface.

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The truck plugs a hose into the airplane's waste tank valve and removes all of the waste into the tank on the back of the truck. The truck then takes the waste to a special area at the airport reserved for the waste from all aeroplanes, and the toilet waste is emptied into the sewer system for that airport.

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While modern trains won't litter the tracks with human excrement, the traditional method did just that. This is what was known as a hopper toilet. It could either be a simple hole in the floor (also known as a drop chute toilet) or a full-flush system.

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Yes, many cruise ships dump plastic at sea. It's illegal according to U.S. and international maritime law, but many companies have proven they don't care, and have been caught illegally spewing plastic into the sea. Carnival Cruise Lines was found dumping food mixed with plastic waste into the waters of the Bahamas.

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While fuel dumps don't happen every day, they're also not uncommon. Nor do they usually represent a major emergency. In fact if an aircraft is taking the time to dump fuel before landing, that's likely an indication that the issue forcing the plane to land is serious but not critical.

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Do Cruise Ships Dump Sewage? Yes. To get into a few more specifics than above, the U.S. allows cruise ships to dump treated waste into the ocean if they are within three and a half miles from shore. Beyond that point, there are no restrictions for dumping untreated, raw sewage in U.S. ocean waters.

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On board North American aircraft, including low-cost, charter, and scheduled service airline carriers, the normally accepted minimum ratio of lavatories to passengers is approximately one lavatory for every 50 passengers.

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22 October 1962: Northwest Airlines Flight 293, a DC-7C with 7 crew and 95 passengers made a successful water landing in Sitka Sound.

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When flying over land, of course it is more likely that there will be more airfields closer to the aircraft at any given time. However, because of lessons learned from its history and the improvements in aircraft and engine reliability, crossing the oceans is deemed as safe as flying over land.

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Your nearby cabin crew most likely will not be talking to passengers on take-off or landing, and you may think they are just thinking about dinner that night. This is what they are actually doing to prepare for the best outcome should there be an emergency evacuation. They are preparing to save lives.

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