As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIRCRAFT REPORTED TO HAVING THE FLIGHT MASTER CAUTION LIGHT ILLUMINATED ALONG WITH BOTH STAB CONTROL CAUTION LIGHTS ON TAKEOFF OUT OF TORONTO (YYZ). THE AIRCRAFT RETURNED TO TORONTO FOR AN UNEVENTFUL LANDING. THE HORIZONTAL STABILIZER CONTROL UNIT WAS REPLACED AS PER FOKKER F28 MAINTENANCE MANUAL 27-42-01 IN YYZ. THE AIRCRAFT WAS RELEASED SUBJECT TO SATISFACTORY TEST FLIGHT AND THEN SATISFACTORY TEST FLIGHT WAS COMPLETED.