Past Merlin/Metro loss of directional control on the takeoff roll incidents/accidents have been found to be caused by electrical problems with the nose wheel steering system. At least one accident was caused by starting the takeoff with one prop on the start locks. Rudder pressure held it straight until the steer lock button was released, then off to the side they went. By the time the captain recognized the urgency and rejected the takeoff by retarding the throttles and applying the brakes, it was too late to avoid leaving the runway. Apparently it happens very quickly. Until the investigators have interviewed the crew and examined the systems affecting directional control, the nature of the sequence of events leading to this accident will remain unknown, even to them. Once sufficient facts have been gathered, the sequence can be established. Too bad we have to wait so long before the facts become public. The urge to speculate is very strong. As yet, there is nothing for us to go on except past occurances. I am anxious to see some more facts about this case so that the speculation may at least become better informed speculation! Thankfully, it appears no serious injury was inflicted upon the occupants. If anyone sees any statements from investigators released, I trust they will post them here.
Best,
Westhawk