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Old 19th Feb 2017, 01:03
  #10 (permalink)  
megan
 
Join Date: Mar 2005
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Maybe a computer problem. The one flying it or the aircraft.That could be a conflict.
Perhaps a repeat of this?

https://www.fomento.gob.es/NR/rdonly...006_A_ENG1.pdf

Synopsis
The aircraft Airbus A-320-B, registered EC-HKJ and operated by IBERIA was on a commercial flight under call sign IB-1456 from Barcelona to Bilbao on February 7th, 2001. It found turbulent conditions during the approach phase to its destination at around 22:00h UTC. On the final approach phase flying below 200 ft radio-altitude the aircraft encountered strong and changing vertical and horizontal gusts while descending at a rate of around 1,200 ft/min (6 m/s).

The aircraft did not react to the pitch-up order input applied by both pilots on the sidesticks, due to the design software logic that operates at these specific moments, and did not flare. Announcements of «dual-input» warning were heard at the time.

Then the captain, in view of the «sink rate» warnings, selected TOGA power setting to go around and abort the landing.

The pilots’ actions on the flight controls could not avoid a hard touchdown of the aircraft in a slight nose down attitude, and the captain decided to continue the landing and to stop the aircraft. The aircraft slowed-down along 1,100 m of the runway within the paved surface. It finally came to a stop with its horizontal axis at an angle of 60° to the right of the runway center line.

Upon impact, the nose landing gear collapsed, but the aircraft remained within the runway and stopped after 1,100 meters of landing run with all four main gear tires burst. An emergency evacuation was carried out.

A passenger was a seriously injured and several other occupants received some bruises and injuries produced during the evacuation of the aircraft.

The internal structural damages of the airframe were beyond economically viable repair and the aircraft was written off.

The cause of the accident was the activation of the angle of attack protection system which, under a particular combination of vertical gusts and windshear and the simultaneous actions of both crew members on the sidesticks not accounted for in the design, prevented the aeroplane from pitching up and flaring during the landing.
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