Originally Posted by
nene
I thought a major contributor was that Boeing made the airspeed comparator circuit an "option" to these carriers, so that if that had been installed on either of these planes as a mandatory option, neither would have fired MCAS for an erroring airspeed indicator.
In any case, the procedure for runaway stab trim covered this malfunction. To make matters worse, they were hand flying the plane, and just as I experienced overseas having seen what happens after V1 cut boondoggles, actually handflying the plane took distant second place over the struggle to get the autopilot on.