What was found
LH SPOILERON IB PCU WING ATTACH POINT NUTS ARE CORRODED. (C-CHECK- RO 11/11/21) INSTALLED NEW HARDWARE ON L/H SPOILERON I/B PCU TO WING ATTACHING POINT IAW CRJ 200 AMM 27-62-01-400-801 STEP 2.B(4)-(7). REPLACED CORRODED SPOILERON HINGE NUT BEHIND IB PCU WING ATTACH POINT E IAW CRJ 200 AMM27-64-01-400-801. RIG CHECK PERFORMED AND FOUND IN LIMITS IAW CRJ 200 AMM 27-62-01-220-802. - FUNCTIONAL TEST OF SECUS GOOD IAW CRJ / 200 AMM 27-61-05-720-801. OPS TEST OF FLIGHT SPOILER/SPOILERON GOOD IAW CRJ 200 AMM 27-64-00-710-801. REFERENCE ATTACHED CONTINUE CARD FOR DETAILS OF WORK PERFORMED.