As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IN CRUISE CREW NOTICED THAT THE LT SIDE OF THE HORIZONTAL STABILIZER MECHANICAL CONTROL LEVERS, LT SIDE OF THE SUITCASE HANDLES. RAPIDLY MOVED TO THE NOSE DOWN POSITION. THE CREW RETURNED TO THE NEAREST SUITABLE AIRPORT. MAINTENANCE FOUND THE LT HORIZONTAL STABILIZER MECHANICAL ACTUATION CABLE BROKEN, LT NOSE UP, CABLE LOCATED NEAR THE STABILIZER. CABLE WAS REPLACED WITH SERVICEABLE UNIT. ACFT WAS RETURNED TO SERVICE.