Originally Posted by TheInquisitor
Just a theory here, but have another look at the FDR trace, in particular around the time the #1 was slotted.
By pure happenstance, possibly because of where the #1 PL had been retarded to at this time, most of the engine instruments at this time would have been giving very similar readings, comparing left vs right.
Perhaps a contributing factor in misidentification?
Surely the only reason the engine instrument readings were similar when the #1 PL had been retarded was because the miss identification had already occurred and the serviceable (#1) engine had been shut down?