There's no toilet in the cockpit, and during takeoff and landing both pilots stay strapped in.
- So you wait for cruise. The autopilot is flying, and your copilot takes over.
- But the cockpit door is a security barrier.
- So the crew blocks the aisle, often with a food cart, and on many airlines a flight attendant steps in so the cockpit is never left with one person.
- And when you flush, the pressurized cabin against the thin air outside sucks everything into a sealed tank in the belly.
- But in a fighter jet there's no aisle and no toilet.
- So pilots use special bags with a powder that turns liquid into gel, and time their meals.
Nothing gets dumped from the sky. A service truck drains the tank after landing.
