Some real serious piloting went on during that flight!!!

What a great outcome.

In direct mode the spoilers will still operate for roll but at a fixed gain rather than speed sensitive.

The spoilers make proverse yaw, the way we want it. Yoke right, right spoilers up, more drag on the right side, right yaw.

I guess the bank angle protection only made things way worse trying to level up but instead increasing the roll. What a nightmare...

PPRUNE seems to be a credible source of information ;) : https://www.independent.co.uk/travel/news-and-advice/air-astana-plane-pilots-lose-control-portugal-flightpath-embraer-190-a8629491.html

Thanks, Netra. Can you send me a PM with the link?

Flight control check?
 

If this was just out of maintenance, wouldn't a "free and correct" check of the controls be on the to-do list prior to departure?

I'm not putting the blame on the pilots ... it just seems like an omission that could have been easily spotted.

Only problem is, on this aircraft, in the problem configuration, yoke right, aircraft rolls left, spoilers create right yaw. Somehow, that doesn't feel like balanced flight to me, therefore the reason for my statement.
The thought of bank angle protection operating in that environment scares me, and I'm relatively fearless.

The rollspoilers also create a roll tendency by reducing the lift of the wing.
So basicly, when using small inputs, the airplane will roll in the wrong direction because only the aileron actuates.
When using larger inputs the spoilers will have more authority than the aileron, reversing the roll in the right direction. Crazy flying.

Here's the Kazakh report about the Captain (Russian) that Netra mentioned as well as a half decent Google translation. According to another report from the same source, the airline suspects errors during C-Check maintenance as a probable cause.

Am I correct in thinking that an A320 had a similar issue following maitnenance with reverse connected roll control surfaces on a pax flight out of LGW several years ago? Or is my memory at fault?
7B

via AVH https://www.flightglobal.com/news/ar...a-a320-130318/

No wonder they had control problems with a control column shaped like that! :{

Fantastic effort by the crew to 'recover' from this problem.:ok:
Maintenance Contractor may well have some awkward questions to answer.

How many previous crossed-cable incidents happened on aircraft that also had roll spoilers? Most of the types mentioned above predate automated roll spoilers.

As noted above, if the sense of the controls is exactly reversed you might get used to it (for example using the one hand on each column method) but if the controls essentially reverse authority as you command more roll (due to the ailerons being overpowered by the roll spoilers) then you're in a very rarely explored situation. If there are some exceptional-airmanship awards being handed out, these guys should be near the front of the line.