What's Going on here? Climb out with spoilers UAL320

Baronman

Baronman

Well-Known Member
Pretty bizarre if you ask me. After liftoff the spoilers stay deployed about 1/4 up.

Starts at 13:30 mark.

 
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They aren't up all the way but they are up as if that side is trying to put them up a bit in the way of aileron assistance (whatever the Airbus term may be for that).

At 14:07 you can see them go back down.
 
I know in both of the pointy-nosed jets I have significant time in, the speedbrakes sometimes will creep open, either from residual hydraulic pressure when the cockpit switch is not actively commanding an open or closed position, or from an accidental momentary switch bump that partially extends them. Pretty ordinary occurrence...when you hear the odd wind noise, check the switch position and ensure they're fully retracted.

Dunno the Airbus flight control mech, but they could also be spoilerons.

Either way, not "bizarre" IMHO.
 
They do act as spoilerons....But in this case the wing is level for some time, they're not acting in a roll capacity unless there's something else going on with the rudder/engine.

I'll go with residual pressure or maybe something funny with the switch as the ground spoilers were deactivated after takeoff.
 
That flight attendant giving the safety briefing at the beginning kinda sounds like this lady:
image.jpg
 
He partially deployed them when he disarmed them (a bit too rough pounding the handle down with a slight aft motion)

Eventually you'll get a master caution and an ECAM message advising you of the situation with the thrust out of idle and spoilers deployed. It gives you about 20-30 seconds to correct the situation before it triggers the caution.

They won't auto-stow unless TOGA or full flaps are selected.
 
True....But the ECAM will flash the yellow caution almost immediately with power in.

Easy to overlook probably during a busy climb out.
 
Hacker15e said:
I know in both of the pointy-nosed jets I have significant time in, the speedbrakes sometimes will creep open, either from residual hydraulic pressure when the cockpit switch is not actively commanding an open or closed position, or from an accidental momentary switch bump that partially extends them. Pretty ordinary occurrence...when you hear the odd wind noise, check the switch position and ensure they're fully retracted.

Dunno the Airbus flight control mech, but they could also be spoilerons.

Either way, not "bizarre" IMHO.
Click to expand...

Reminds me of an interesting case on one of our CRJ-200s. When selecting flaps 20 the airplane would begin to roll to one side. Not dangerously so, but enough that we could tell something wasn't right. We ended up writing it up and having to ferry it down to ATL. I flew the airplane a couple weeks later and looked at the maintenance log. They had to test fly the airplane 5 times before they figured out that as the flaps deployed past a certain point, one of the bonding straps was bumping the underside of the spoilers and deploying one panel just enough that they proximity sensor still thought it was stowed.
 
Baronman said:
True....But the ECAM will flash the yellow caution almost immediately with power in.

Easy to overlook probably during a busy climb out.
Click to expand...

To be technical, t's a flashing yellow memo- and extremely common to be overlooked! The Speedbrake deployed memo just changes from green to amber and flashes.

The master caution and actual caution message don't ding/pop up for 20-30 seconds.
 
PeanuckleCRJ said:
To be technical, t's a flashing yellow memo- and extremely common to be overlooked! The Speedbrake deployed memo just changes from green to amber and flashes.

The master caution and actual caution message don't ding/pop up for 20-30 seconds.
Click to expand...

In this case (Takeoff) it would be amber and flashing immediately right?
 
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