Originally Posted by Lyman
As to the THS, I take note that you believe the THS remained at full nose up due to insufficiency and/or longevity of ND commands? Without knowing the parameters of this control, how can we say this?
From the final report:
1.1 History of flight: The trimmable horizontal stabilizer (THS) began a nose-up movement and moved from 3 to 13 degrees pitch-up in about 1 minute and remained in the latter position until the end of the flight.
1.16.3.3 Analysis of the flight control law: A simulation of the operation of the flight control computers was undertaken, which involved recalculating the movements of the elevators and of the trimmable horizontal stabiliser (THS) based on pilots’ inputs and compared the results against FDR parameters. This simulation was continued up until the end of the flight. The recalculated deflection angles for the elevators and the PHR are consistent with the parameters recorded.
EDIT::
And the command was lacking because with down elevators, the computer will not allow less G?
The computer will allow - (minus) 1g.