Thread: AF 447 article
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Old 12-11-2011 | 10:23 AM
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RI830
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No offense taken, but I do have some understanding of the Normal vs Alternate Law on the Airbus design. That's why I don't like it.
In regards to the cre not knowing that the airplane was stalled. Have you noticed that they didn't react to the "stall, stall" aural cue? There are times that a crew will get overloaded with other tasks and they mentally tune out the other noise. There have been crews who landed gear up, while the airplane screamed "too low gear".
My comment abou tknowing that they were stalled is not in regard to the plane masking it....."it's about the crew not "hearing" it.

Although.....IMHO....I'm not a fan of the Airbus logic.

Originally Posted by Airhoss
No offense intended but you have some serious misunderstandings about how the Airbus flt controls and warning systems operate.

The airplane was screaming STALL STALL STALL and "cricket" was chirping, which is basically the master warning, all the way to the ground. So I have no idea how they didn't know the airplane was in a stall.

Secondly the airplane was in flight control alternate law which means that the stick was giving direct commands to the control surfaces. It did exactly what the pilot asked it to do. IF the airplane would have been in flight control normal law it would have gone to max thrust and pitched the nose down automatically and overridden the pilots inputs.

Now the whole thing about one guy not knowing what the other guy is doing because both sticks don't move in conjunction with each other I 100% agree that is the most poorly designed and dangerous system I've ever had the misfortune of flying.

However in the case of the 727 and the DC-8 that both stalled and were held into a stall those guys also had full cockpit and aerodynamic indications of a stall and still held the nose up all the way to the ground. Which IMO indicates a serious training issue.

Take a look at these and tell me what happened in both cases.

This one is eerily familiar to the Air France crash.

ASN Aircraft accident Boeing 727-251 N274US Stony Point, NY

Here is another also in a Jurassic jet.

ASN Aircraft accident McDonnell Douglas DC-8-63F N827AX Narrows, VA

Aviation Safety Network > Accident investigation > CVR / FDR > Transcripts > CVR transcript Airborne Express Flight 827
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