As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT THROTTE STUCK IN THE CRUISE DETENT IN FLIGHT AT ALTITUDE. EXESSIVE BROWN FLUID FOUND UNDER COCKPIT FLOORBOARDS. (REMOVED) ENVELOPING THE THROTTLE CABLES. SUSPECT FREEZING IN FLIGHT CONDITION. UNABLE TO DETERMINE SOURCE BY LIMITED TIME TO TROUBLESHOOT. CUSTOMER HAD FLIGHT TO COMPLETE.