What was found
(CAN) FOUND DAMAGE ON SHOCK ABSORBER ASSY. DAMAGE CAUSED FROM THE TOP BOSS ASSY CONTACTING THE SHAFT FOR SHOCK ABSORBER. THE BUSHING WAS DISCOVERED MISSING, THE ASSEMBLY ON ACFT C0630, C0631, AND C0632 AT SAME FLIGHT SCHOOL. MFG NOTIFIED OF DAMAGE, PARTS REPLACED AND ACFT RETURNED TO SERVICE. THE QUALITY/AIRWORTHINESS IS CURRENTLY REVIEWING WORK ORDERS IN AN EFFORT TO ISOLATE ACAFT AFFECTED BY THIS MISSING BUSHING. ALL 3 ACFT REPORTED BETWEEN 1300 AND 1400 HRS TSN.