What was found
VAPOR CYCLE SYSTEM GROUND COOLING FAN DEVELOPED LOUD NOISE AND VIBRATION THAT WAS FELT AND HEARD IN CABIN. MX TROUBLESHOT AND FOUND THAT THE COOLING FAN ASSY HAD COME LOOSE INSIDE OF UNIT AND BANGED AROUND IN CASE. VAPOR CYCLE SYSTEM AND GROUND COOLING FAN INOP. GROUND COOLING FAN, PN 1133710-15, SN 387, REMOVED. INSTALLED MODIFIED GROUND COOLING FAN, PN 1133710-15, SN 398 IAW PHENOM 100 AMM CH 21-23-05. OPS CHECKED SATISFACTORY. GROUND COOLING FAN MODIFIED.