BA 747 Crew commended

[Lonewolf_50]

@ tyro:
From the link Airclues provided us:

Engines 2 + 3 gave spurious thrust reverser unlocked indications at rotate leading to an automatic slat retraction with associated loss of lift.

The thrust reverse sub-system (and its relation to the movement of spoilers) is what appears to be in play, which is why I asked the question I did.
See also this post: http://www.pprune.org/rumours-news/3...ml#post4925602
and this: http://www.pprune.org/rumours-news/3...ml#post4927933
and this: http://www.pprune.org/rumours-news/3...ml#post4927367
and this: http://www.pprune.org/rumours-news/3...ml#post5052472
and this: http://www.pprune.org/rumours-news/3...ml#post5385782

@ taildragger, Airclues, ExSP33db1rd, Airbubba, DozeyWannabe

Thank you for the education.
EDIT: "thrust reverse function" is probably more correct that "thrust reverse sub system" and in any case, more thanks for the education to all and sundry, and the Tip o' the Stetson to the crew.