As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT SELECTED FLAP 15 DEGREES TO 0. THE STAB MISMATCH & HYD WARNING LIGHT REMAIN ILLUMINATED INTERMITTENT. AFTER INVESTIGATION TECHNICIANS FOUND NUT ON BOTH BOLTS ATTACHING ROD ASSEMBLY TO HORIZONTAL STABILIZER POSITION SWITCHES, ONLY HAND TIGHTEN, ALLOWING EXCESSIVE PLAY ON ARM. REFERENCED NUTS WERE PROPERLY TORQUED AND SYSTEM OPERATE NORMALLY.