As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) INSP OF HORIZONTAL STABILIZER SCREWJACK DURING M01 CHECK REVEALED EVIDENCE OF INTERNAL CORROSION AS A RESULT OF DISCOLORATION IN LUBRICANT. TEARDOWN AND SHOP ANALYSIS REQUESTED WITH RESULTS TO BE FORWARDED TO AWC/YUL. NOTE: SDR ISSUED AGAINST (GDSP) REFLECTING SIMILAR CORROSION CONCERNS.