"The crew performed all the procedures repeatedly provided by the manufacturer, but was not able to control the aircraft," said Ethiopian Transport Minister Dagmawit Moges, unveiling results of the preliminary probe into the crash.
Presumably Moges refers to "STAB TRIM CUT OUT switches (both) ... CUT OUT" on the Runaway Stabilizer Checklist.
Does the ET302 Preliminary FDR data support the assertion that the crew did this, and if so, when?