As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R/H I/B #1 MOVEABLE VANE AND VANE ACTUATOR HAS EVIDENCE OF CORROSION OF MAIN BOLT ( FLAP TO VANE ) AS WELL AS ATTACHMENT BOLT COMMON TO SAFETY WIRE (C-CHECK RO 11/04/2021) INSTALLED NEW BOLT IAW CRJ900 AMM 27-52-23-000-801-A01 STEP A-3 AND 27-52-23-400-801-A01 STEP B-7