As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PERFORMING A GVI OF THE HORIZONTAL STABILIZER STEADY FITTING FOR THE PRESENCE OF LOOSE/DAMAGED ATTACHING HARDWARE. FOUND THE FOUR UPPER BOLTS ARE MISSING COTTER PINS. (C-CHECK RO 8/1/2021) INSTALLED 4 NEW COTTOR PINS HORIZONTAL STABILIZER STEADY FITTING FOUR UPPER BOLTS REF CRJ 200 AMM 20-24-00-910-801