PPRuNe Forums - View Single Post - TAM A320 crash at Congonhas, Brazil
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Old 22nd Sep 2007, 20:49
  #2381 (permalink)  
PJ2
 
Join Date: Mar 2003
Location: BC
Age: 76
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marciovp;

... it is hard for me to conceive that a plane with a TL on climb detent and the other on reverser with the pilot trying to apply the brakes remains silent...
Well, at the risk of scratching the same skin dozens of times over again, if it is hard for you sir, think of how hard it is for the manufacturers to think the same thing.

Before this accident, if someone has posited the scenario on PPRuNe, would you or anyone here have ever given creedance or even entertained the (wild) notion that thrust levers would/could possibly be left in any other position than idle, in any design, A or B, upon landing? I think not.

Whether it is cables-and-pulleys, bell-cranks-and-pushrods, or sensors-resolvers-and-software the potential for this accident always existed but no aircraft manufacturer ever considered the need to warn crews of the very scenario you describe. Shall automobile designers anticipate that drivers will keep their foot on the gas pedal while braking heavily for a stop-sign? Where are the bounds of the reasonable? Unless we have a situation where there is a physical disconnect under the pedestal, an impediment to retarding the TL above, or a FADEC issue, this is no more an "Airbus/computer/thrust lever" matter than it is a Ford, Audi, BMW or GM gas-and-brake-pedal matter.

Now the industry must deal with the human factors and industrial design work that may be needed to prevent what will almost certainly be a rare-if-ever re-occurrence.

That response is something quite different than "never having anticipated the inconceivable".


georgecrock;

Wow.

PJ2

Last edited by PJ2; 22nd Sep 2007 at 21:05.
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