Originally Posted by KC10 FATboy

And remember, the stick shaker onset was artificially raised due to them putting it into "ice" mode. Therefore, you can make the argument that the aircraft may have been flyable at airspeeds below that reference point. We know that it was flying just fine as they approached the "ice" stick shaker reference point. Vrefs are 1.3 stall speeds. I don't know what their Vref was ... but assuming 130 knots ... your stall speed is approximately 91knots. The aircraft is still flying below 130 knots.