73qanda, ATCWhatcher,
putting the event in context and human factors
also with,
onsoutherntip re interpretation of FDR trim command and tail trim movement - they may differ; see post
Ethiopian Prelim Report and the back links.
Adding to some of the ‘historic’ concerns, would the slightly smaller trim wheel in latter versions of the 737 reduce the effective torque which could be applied in grabbing the wheel as part of the runaway trim drill - and applying manual trim to recover ?