As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R/H ELEVATOR HYDRAULIC SYSTEM #2 PCU FAILED BACKLASH AT 0.350" AND FAILED LEAK CHECK. (C-CHECK RO 10-22-21) REMOVED AND REPLACED THE RH ELEVATOR #2 PCU WITH SERVICEABLE UNIT, REF CRJ 900 AMM 27-33-01-000-801-A01 AND CRJ 900 AMM 27-33-01-400-801-A01. OPERATIONAL CHECK. CHECKED GOOD.COMPLIED WITH 27-320-1003-SKY