Originally Posted by
EXDAC
May not be a good theory as the 604 does not appear to have fuel shut off switches that are separate from the thrust levers. I have never operated a Challenger, or even been in the cockpit, but seems hard to imagine how both thrust levers could have accidentally been pulled past the gate into Shut Off position unless both gates had failed.
ref -
https://www.smartcockpit.com/docs/CL...NE_GENERAL.pdf
Left (white) thrust reversers switches
Middle (red) fuel cut off switches
Right (blue) flap selector
it is very much feasible to have your arm in the way either left to right or right to left when the thrust levers are pulled back.