There are probably many cases of throttle rigging errors or potential errors. Here's one of the worst:
The CT64 turboprop engine in the DHC-5 Buffalo had some positive-engagement features on the throttle and fuel/idle select shafts of the FCU, but DHC never had the mating features to make it foolproof.
Consequently there were several ways to get it wrong. In one case at the flight line, during a zero-torque run (no prop installed) the engine oversped but the o/s trip circuit kept it from destroying itself.
But the oscillating speed was misinterpreted by the techs, and to fix the annoyance they started pulling c/b's. At this point the overspeed continued to well over 150%, the power turbine discs came apart and cut the fuselage in two.
