PPRuNe Forums - View Single Post - He stepped on the Rudder and redefined Va
Old 28th Sep 2013, 06:58
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Owain Glyndwr
 
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An interesting discussion, if only to demonstrate the longevity of misinformation circulating on the 'net

AirRabbit

Well said

bubbers44

Yes, the rudders moved but what moved them? Where does the FDR sense the movement? I think it is the rudder actuator so what caused the actuator to move?

My first thought would be yaw damper, not a totally stupid pilot stomping on his rudders.
If you read the NTSB report and the performance group appendix you will see that AA installed additional instrumentation specifically to record cockpit control positions and forces. On p75 of the appendix you will find rudder position and pedal position; on page 77 you will find pedal forces. All of these correlate with each other, so I find it difficult to see how you can claim that FO input had nothing to do with this accident. How does the yaw damper provide forces at the pedal???

Teledorserious

To go back to your original post, could you please point me towards the actual FAA change to Va? I failed to find it.
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