That checks IO.
JM, I used to fly Hadjes in and out of Africa...I much prefer the rubber kind now.
Just in case sombody is trying to get PC on me, the rubber kind is in reference to what the pax left on my plane (in various spots which is nowhere near the lavs) and not the pax themselves.
And I'm offended at myself.
There. That should cover all the bases. See, I did learn a few things in the 121 ground school.