Originally Posted by PBL
* non-X: failure to retard all thrust levers to idle on landing
Originally Posted by ChristiaanJ
Sounds nice, but it has a glaring hole in it.
We're not interested in the "two known non-occurrences of X", we're interested in the real figure for "non-X".
Oh, dear. Clearly my elementary intro to statistics didn't go quite far enough. RWA and BOAC might like to listen in, also.
You are interested in an event, let us call it T.
T: Thrust levers not immediately reduced by PF to idle on landing; reduced by PM or by PF after PM notifies.
This is a different event from non-X. Why? Because there are no instances of (T & non-X). Why? Because their descriptions contradict each other.
(There, I've been wanting to use that smiley for some time. But who would have thought in answer to ChristiaanJ?)
You're more than welcome to be interested in T. In particular, there might well be useful statistics about T across those with FDA programs, although it may be hard to tease them out.
NotPilotAtAll,
we may infer that not only do you not fly planes, but that you don't work anywhere near the procurement, building, or certification of safety-related systems of any sort, for which some facility with statistics is necessary, whether they are airplanes or not. Please try to make your interventions *thoughtful*.
PBL