Bsieker, I did not claim that the elevators split, I said the Capt column is connected to the left elevator and the Fo's to the right. That is to get around any jam in the control runs, not just the column. The torque tube between the elevators will move both together, regardless of which column is used. The cables have springs to allow the surface to move off one input while the other is jammed.
You have said this twice but I have no reference for this so-called Capt. column is connected to the left and FO to the right elevator?
In the event of a control column jam, an override mechanism allows the control
columns to be physically separated. Applying force against the jam will breakout
either the Captain’s or First Officer’s control column. Whichever column moves
freely after the breakout can provide adequate elevator control.
Although total available elevator travel is significantly reduced, there is sufficient
elevator travel available for landing flare. Column forces are higher and exceed
those experienced during manual reversion. If the jam exists during the landing
phase, higher forces are required to generate sufficient elevator control to flare for
landing. Stabilizer trim is available tocounteract the sustained control column force.
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