Originally Posted by
CurtainTwitcher
*** PURE SPECULATION No data to support ***: The contention would be that at some point the crew actually did use the stab trim cutout switches, leaving them with only manual wound (literally by hand, extremely slow), trim and elevator for pitch control, there was an IAS increase which reached an uncontrollable speed.
Can somebody familiar with the engineering of the 737 comment on whether this is representative of the maximum speed that the stab trim moves?
I know from experience that jackscrews, by their nature, don't operate particularly rapidly, but 90 seconds (approximately) from full nose up to full nose down (and presumably vice versa) seems pretty slow.
If that's the case, the crew would have had little or no chance to reverse a THS runway in the height available.