would have been able to fly AF 447 out the stall induced by the PF without breaking something, especially in the absence of reliable and trusted airspeed information.
The BEA estimate reliable speed after 29 seconds
Page 24 Final report
At about 2 h 10 min 36, the speed displayed on the left side became valid again and
was then 223 kt; the ISIS speed was still erroneous. The aeroplane had lost about
50 kt since the autopilot disconnection and the beginning of the climb. The speed
displayed on the left side was incorrect for 29 seconds.
Page 25
remained in the latter position until the end of the flight. Around fifteen seconds
later, the ADR3 being selected on the right side PFD, the speed on the PF side became
valid again at the same time as that displayed on the ISIS. It was then at 185kt and the
three displayed airspeeds were consistent. The PF continued to make nose-up inputs.
The aeroplane’s altitude reached its maximum of about 38,000 ft; its pitch attitude
and angle of attack were 16 degrees.
So if it was to be stall recovery .. they had good speed indications ..