Originally Posted by BugSmasher1960
In the case of this crash then - if spoilers were auto-armed and deployed when the WOW switch tripped - but thrust levers didn't auto-advance when TOGA was pressed (because of the WOW being tripped) - then I'm wondering if that would mean that the spoilers would still have been deployed when they tried to go-around? (assuming sufficient excess energy to get airborne again, for some reason).
According to the B777 technical training manual (my emphasis):
"During landing, the auto speedbrake operates when all these
conditions occur:
* The main landing gear is on the ground
* The speedbrake lever is in the ARMED position
* Both left and right thrust resolver angles are not at the
takeoff position
* Both thrust resolver angle signals are valid.
Before landing, the pilots arm the speedbrake lever. During the
flare, the pilots move both thrust levers to idle. At touch down,
the auto speedbrake actuator fully extends the speedbrake
lever. This commands all spoilers to fully deploy.
The auto speedbrake retracts to the DOWN position if any of the
above conditions changes after the auto speedbrake has fully
extended."
Consequently, the speedbrakes should retract as soon as the aircraft becomes airborne again, even if the thrust levers are not at the take-off position.