Air Asia 8501 final report
12-01-2015, 04:44 PM
#12
Gets Weekends Off
Joined APC: Jul 2009
Position: Seat: Vegan friendly faux leather
Posts: 988
And the lack of any synthetic "feel", to know what the airflow is doing to the control surfaces, or what the other guy is doing without looking.
Events also similar to Colgan 3407 - startle response to stall.
Shy, do you know if the non-French parts are in English or translation? What the heck does "pull down" mean? Terrible wording by the captain.
Events also similar to Colgan 3407 - startle response to stall.
Shy, do you know if the non-French parts are in English or translation? What the heck does "pull down" mean? Terrible wording by the captain.
12-01-2015, 06:20 PM
#14
Gets Weekends Off
Joined APC: Jun 2008
Position: More Drag
Posts: 447
True, but fact 35 & 38 are also frustrating. I've never flown the bus, but to press an override button for 40 seconds to take control coupled with input summing makes it difficult for one pilot or the other to take control.
Again, never flown the bus but this seems like a human factors gotcha.
Again, never flown the bus but this seems like a human factors gotcha.
A pilot can deactivate the other stick and immediately take full control by pressing and keeping pressed his priority takeover pushbutton. For latching the priority condition, it is recommended to press the takeover push button for more than 40 seconds.
12-01-2015, 08:53 PM
#16
Gets Weekends Off
Joined APC: Nov 2009
Posts: 5,244
12-03-2015, 06:09 AM
#18
Gets Weekends Off
Joined APC: Sep 2014
Position: A320's
Posts: 169
From the animation it looks like roll and pitch were essential canceled between them. A push of the takeover by the CA would have recovered the stall in 5-7k feet at that altitude.
12-03-2015, 07:28 PM
#19
Gets Weekends Off
Joined APC: Jun 2008
Position: More Drag
Posts: 447
To answer your question, no. The Captains' imputs did not diminish the first officers' side stick commands because he did not push and hold the takeover push button. The summing feature (in case of similar and concurrent side stick imputs) would sum them. However, in this case, equal and opposite side stick imputs would effectively neutralize them. So if during a high angle of attack position, if one side stick was pulled full back and held, and the other pushed full down and held, the result would be no movement in pitch from the current pitch attitude.
Last edited by sandlapper223; 12-03-2015 at 07:39 PM.
Thread
Thread Starter
Forum
Replies
Last Post
