Originally Posted by
ARealTimTuffy
There is no mechanical lever or disconnect switch like there is in some aircraft. However, there is an Elevator Control Column Override mechanism. When enough force is applied it will separate the control columns in the event of a column jam. If a elevator jam occurs there isn’t much to do about that.
The idea is that if one elevator jams, the forced separation of the columns lets the pilot with an un-jammed elevator fly the airplane with a single elevator. Hold on, let me find the exact wording...
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 travel is significantly reduced, there is sufficient elevator travel available for the landing flare. Control column forces are higher and exceed those experienced during manual reversion (!)
So, there is a system, but it sounds rather minimal. Maybe Boeing, out of the goodness of their heart, came up with the new EJLA system to make this situation better, even though the older system was certified.