What was found
(CAN) ACFT HAD WARNING LIGHT ON GREEN HYD SYSTEM FLUCTUATING IN AND OUT OF AMBER. EMERGENCY SERVICES WERE ON STAND BY FOR FLIGHT ARRIVAL. ACFT LANDED WITH NO FURTHER ISSUE AND TAXIED ON ITS OWN POWER TO THE GATE. REPLACED G SYS LT YAW DAMPER SERVO IAW AMM 27-26-51-000-001 LEAK CHECKS AND FUNCTIONAL TESTS COMPLETED IAW AMM 22-63-00-710-001A. ALL INDEPENDANT, MR AND CRITICAL SYS SIGNATURES COMPLETED ON THE ASSOCIATED NON-ROUTINE CARDS FOR THIS JOB.