Originally Posted by HN39
What would the FD command have been between 2:10:47 and 2:11:38?
According to the SELECTED VERTICAL SPEED trace on page 111, FD command was for a 1000 feet/min
climb.
For that time period the actual V/S has fluctuated between +3000 and -8000 ft/min ... the horizontal FD bar has shown some push commands as well as pull ones.
When FD 1 and 2 disappeared, the airplane was passing through FL350 in descent ... so maybe the PF, and also PNF for an instant, were trying to not let go the initial assigned flight level with a full nose up command ... ?