How do airplanes get rid of pee?

From the lavatory, the waste travels through the plane's pipes to the rear of the plane and remains in a tank that can only be accessed from the exterior of the plane — pilots can't clear the tanks during the flight. The tank is emptied by special service trucks once the plane is safely on the ground.



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There is a valve on the storage tank that opens when a toilet is flushed and closes when the toilet is not in use – to prevent odours from leaving the tank. This helps to keep the smell down from so many people using the toilet during a flight. The blue chemical helps to keep the smell down as well.

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Keypad. The cockpit door automatically locks, but a keypad outside allows a flight attendant to insert a security code to gain access. A buzzer sounds, and the pilots must switch the door control inside the cockpit to “unlock” to release the door after verifying the crew member through a peephole or video surveillance.

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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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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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Generally no. Aircraft lavatories (the word for toilets) are closed during pushback, taxi, takeoff, climb, descent, landing, arrival, and during turbulence. The only time they can be used is at cruise.

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Boarding and While Onboard
Avoid caffeine, alcohol and soft drinks to prevent frequent trips to the bathroom. Consider limiting fluids before a flight. Travelers choosing this option should use caution to avoid dehydration, and be sure to re-hydrate upon arrival at the destination.

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Does the FAA have a list of prescription and over-the-counter drugs that pilots can and cannot take while flying?
  • Tranquilizers, such as but not limited to Valium, Librium, Ativan.
  • Most antidepressants. ...
  • Opiates, such as Morphine, Codeine, Lortab, Percodan, Oxycontin.
  • Muscle relaxants, such as Soma, Sonata, Flexeril.


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It's hardly a secret that the plane toilet isn't very clean, though it may come as a surprise to learn that some flight attendants rarely use them. I only use the lavatories on the airplane if I need to wash my hands or if I absolutely have to go to the bathroom, an anonymous cabin-crew member said.

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Can economy passengers use the first class bathroom? Simple answer is NO and given below are the reasons. Airlines do not want to see First Class passengers waiting to use the lavatory. In addition to the First Class passengers, those lavatories are used by the pilots.

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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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On airplanes, coffee is brewed with water from the plane's water tanks… which are probably kind of gross. I'm sure the water is generally pretty clean when it enters the tanks, though as you'd expect, the tanks aren't cleaned very often, and may have bacteria.

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