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Old 13th Mar 2005, 17:39
  #74 (permalink)  
Wino
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From Zeke

combined with numerous recorded rudder pedal inputs (more than the two you stated) with over 6 inches of rudder pedal displacement.
You are quite wrong in that statement.

If there was 6 inches of displacement of the rudder pedal, then the problem with 587 was the aircraft, not the pilot.

The rudder pedal travel is 4 inches on the ground. At 250 knots allowable travel of the pedal by the rudder load limiter sisytem on the A300600/A310 is 1 inch ! Furthermore, the breakout force to start the rudder moving is the same as to reach the stop. So at 250 knots the rudder pedals are effectively toggle switches.

The rudder load limiter on the A310/300600 works by restricted the range of motion of the rudder pedals, while maintaining the same ratio of motion to degrees of travel on the tail.,

If what you are saying is correct, then there was more rudder travel then available when the aircraft is stopped at the gate. What was really recorded was that not once did the pedals move more than 1 inch! from a controll input point of view with the aircraft not behaving as you would expect, its a guarantee of confusion.

Face it, it is Airbus's opinion that they have NEVER made a mistake, and it is an opinion in which they are saddly wrong.

And you are wrong, in your contention as well. The plane is a trap for a Pilot Induced oscilation, which is what may have occured in 587. A POI is a DESIGN fault!

Cheers
Wino
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