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-   -   BAW492 diversion at Gibraltar (https://www.pprune.org/accidents-close-calls/618789-baw492-diversion-gibraltar.html)

xcris 25th Feb 2019 12:45

BAW492 diversion at Gibraltar
 
BAW 492 diverted today to Malaga. The video footage is disturbing. Have any one seen something like this, ever before?
Flightradar24 shows the diversion path, but I have no access to vertical profile and speed/bearing.

https://www.airlive.net/breaking-vid...-at-gibraltar/

iome 25th Feb 2019 12:57

https://cimg1.ibsrv.net/gimg/pprune....20802889e6.png

autothrottle 25th Feb 2019 13:05

Wind shear go around as gear down. Perhaps Rotor from the rock. Tricky place to go when it’s windy.

rog747 25th Feb 2019 13:06

Also on the airlines and airports BA thread -- but only the clip not the tracks

The winds from the Rock give off rotors - this was quite severe - today strong winds, clear skies warm temps
wind was gusting 30 even 40 from the East

If it was a technical issue affecting the control the crew would have likely declared that with a pan pan or even a may day

krismiler 25th Feb 2019 13:16

Things might get worse after Britexit as the Spanish will almost certainly impose airspace restrictions.

Wilko49 25th Feb 2019 13:57

Interesting approach and angle as seen on the ground by many in Gibraltar. People commenting it did not look good, and was unusual.

geardown1 25th Feb 2019 15:29

Does anyone think this is some sort of pilot induced oscillation?

tascats 25th Feb 2019 15:52

A short clip from on board:uhoh:


EI_DVM 25th Feb 2019 16:33

Be it pilot induced or Autopilot induced the spoiler movements in that video certainly seem out of phase with the roll, probably adding to the mechanical turbulence off the rock, never a nice approach even in light winds.

MichaelKPIT 25th Feb 2019 17:07

Here's a video from outside:

ManaAdaSystem 25th Feb 2019 17:38

Rotors off the Rock can do that????

Contact Approach 25th Feb 2019 17:45

That doesn't look all too good.

Nil by mouth 25th Feb 2019 17:48


Originally Posted by krismiler (Post 10400071)
Things might get worse after Britexit as the Spanish will almost certainly impose airspace restrictions.

I believe there has been airspace restrictions for many years which is why aircraft have to fly close to the rock then bank right to land or bank left after take-off.
From my apartment in Gib I see this approach on a daily basis.
This weekend it was nice to see a Hercules (I think) performing that manoeuvre , but more tightly..

Just the fax maam 25th Feb 2019 18:28

IIRC there were a number of incidents of A319/320/321 aircraft entering severe roll oscillation in full config in strong cross wind situations, perhaps late 90's very early 2000's? At least one damaged the wing. They were investigated by more than one XAA and Airbus ordered to roll out compulsory software updates as a fix. Something to do with yaw dampening feedback loop and corresponding spoiler interaction (only in a specific config/set of conditions?) but could be way off on the detail as it was a long time ago... perhaps someone more resourceful than I could find the reports/advisories if of interest.

Whilst rotor/wave and other obstacle-induced turbulent air may have caused an initial upset that led to a go-around, the oscillation seen in the videos is something else entirely, IMV. Happy to be corrected.

The OP had the correct verbiage in either case though: disturbing!

Sailvi767 25th Feb 2019 18:32

That looks like a flight control malfunction to me. Possibly direct law in roll mode.

CAP A330 25th Feb 2019 18:47


Originally Posted by xcris (Post 10400040)
BAW 492 diverted today to Malaga. The video footage is disturbing. Have any one seen something like this, ever before?
Flightradar24 shows the diversion path, but I have no access to vertical profile and speed/bearing.

https://www.airlive.net/breaking-vid...-at-gibraltar/

Looks like the pilot is deflecting the stick far too much in reaction. Nothing to see here.

Right Way Up 25th Feb 2019 19:07


Looks like the pilot is deflecting the stick far too much in reaction
Cap...That sounds very intriguing and very dangerous. How can you tell?

Doug E Style 25th Feb 2019 19:09

I’ll bet this crew never imagined that by the time they got back to base the most interesting part of their day would be all over the web.

Imagegear 25th Feb 2019 19:13

CAP A330

OK I'll bite....:yuk:

You have to be smoking your socks.

I'm am fairly certain that Gib will be a "Captains Only" landing and for any BA Captain to be over-controlling in direct mode, to that extent, even under those conditions, is not worth a comment.



IG

Old King Coal 25th Feb 2019 19:20

One's tempted to suggest that it's maybe something to do with an un-noticed control law switch (see section: 4.6) coupled with PIO (pilot induced oscillation) in a high workload (and turbulent) environment?


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