Speedbrakes - I'm confused
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The manual reads:
“The speed brakes open to 60 degrees with the gear not down and locked. With gear down and locked speed brake opening is limited to 43 degrees to prevent the lower surfaces from striking the runway during landing. This limit can be overridden by holding the SPD BRK switch in the open (aft) position.”
So does this mean you should first extend the gear, then the speedbrake – or if necessary open speedbrackes to reduce speed, close them, extend gear, open again? Cause otherwise if you lower the gear and keep holding the switch to long for extension they will go past the 43 degree setting? I’m confused.
And shouldn’t it read “SPD BRK switch in the open (fwd) position”? Left open, Center, right close (if you look at the switch from the top).
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The manual reads:
“The speed brakes open to 60 degrees with the gear not down and locked. With gear down and locked speed brake opening is limited to 43 degrees to prevent the lower surfaces from striking the runway during landing. This limit can be overridden by holding the SPD BRK switch in the open (aft) position.”
So does this mean you should first extend the gear, then the speedbrake – or if necessary open speedbrackes to reduce speed, close them, extend gear, open again? Cause otherwise if you lower the gear and keep holding the switch to long for extension they will go past the 43 degree setting? I’m confused.
And shouldn’t it read “SPD BRK switch in the open (fwd) position”? Left open, Center, right close (if you look at the switch from the top).
It just means that with the gear down, the speed brake opens less than with the gear up. You can overide this by holding the speedbrake switch but as soon as you release the switch, they will reduce back to 43degrees. As soon as you touch all three wheels down, the limit can be passed and brakes will open to 60 degrees as normal.
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as soon as you release the switch, they will reduce back to 43degrees.
Thanks! That was the missing piece of information.
Only the fwd/aft thing keeps being confusing.
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Thanks! That was the missing piece of information.
Only the fwd/aft thing keeps being confusing.
I suppose you just need to consider left/right as aft/forward.
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Open is aft,
close is FWD. -
think of it with your thumb motion then the forward aft becomes crystal clear
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