I suspect the most interesting part of this is why, precisely:<p>If this is a known bug, incorrect setting of the throttle and subsequent disconnect of the auto throttle system, why is the aircraft still deemed airworthy while using the auto throttle during takeoff?<p>How was using defective equipment critical to flight safety if engaged not specifically prohibited in an addendum to the POH?<p>Because that would require additional training and be a bad look, that’s why, I suspect.<p>If a FAR23 (light) aircraft had a defective throttle cable that sometimes failed to effect the commanded throttle setting under certain conditions, it would be grounded immediately pending remedial service or, if impossible, at least placarding of the prohibited configuration and modification to the POH to specified prohibit that configuration, as well as implicating changes into training materials if the aircraft fell into the high performance category.<p>That Boeing is operating at a lower standard of flight safety than is typically required of SLA regulations is an indication of a deeply broken relationship with regulators.