Originally Posted by LEM
Hi all.
The cklist is not complicated, what I'm trying to figure out is why exactly it is built like that.
I've got a few doubts:
1) Why can't I recycle even if I've got roll?
If one slat is stuck extended, maybe because of ice accumulation, I'd try the full extended position, using F10, then back to up...
Well, consider this. If you have a single LE Slat light and roll, thats not an erroneous indication. If during retraction from F1 to Fup, that single slat panel gets stuck half way and it does give you roll, if you try to recycle to F1 or more (ignoring the QRH instructions), maybe that single slat will extend further with you not being able to retract it, ending up with more roll. So a possibly manageable situation with a roll that could be compensated and followed by a safe landing, could be aggrevated, becoming an uncontrollable roll.
Sometimes high lift devices can become stuck only in one direction. (i.e. not able to retract but able to extend and vice versa) .
As far as the MEL scenario you mention, I think is a little bit farfetched to have a (really) inop LE slat light and get that particular slat stuck on the same day.