IIRC, the EL AL crashed because of the leading edge assymetry when they were directed to reduce speed. Had they kept their speed up and landed with no flaps, they would have been in a much better position.
If they'd used the alternate system correctly, they would not have lost control.
It's the one switch in a 747 Classic that'll kill you - The Alternate Leading Edge Arm switch.
LE's
FIRST, THEN the TE's.