What was found
ENROUTE, DIVERTED, DUE TO SUSPECTED CONTROL ISSUE. REMOVED SUSPECTED MALFUNCTIONING COPILOT PITCH AND ROLL GYRO, PN 121672-01-17, SN 0000450. INSTALLED SERVICEABLE COPILOT PITCH AND ROLL GYRO, PN 121672-01-17, SN 0000507 IAW S61 MM CH 22-10-18, PG 201. OPS CHECK GOOD.