When the captain called out "I have the controls", about 53 s after the approach had been aborted, the forces recorded on the right-hand control column became zero and the flight path was stabilized.
but also :
The investigation revealed that crews had little knowledge of the breakout mechanisms. A certain number of pilots were aware of the existence of this system and often only associated it with a jammed control. The description of the system in the FCOM was limited to an explanation about the risk of a control jamming. The manufacturer's and operator's documentation did not explicitly mention the effects of simultaneous actions on the controls, and this point was not covered in training
and under Safety measures taken after the incident :
that Boeing supply Air France with information about the operation of the roll and pitch flight control desynchronization mechanisms along with the consequences of the desynchronization for the rest of the flight; ➢ that all the Boeing documentation regarding the operation of the roll and pitch flight control desynchronization mechanisms is made available to crews;