What was found
AIRCRAFT VIBRATES EXCESSIVELY AFTER TAKEOFF AND DURING INTITIAL CLIMB-OUT. STOPS WHEN ABOVE 210 KCAS AND FLAPS UP. INITIAL MAINTENANCE INSPECTION INDICATIONS OF SPOILER/AILERON CABLE SYSTEM BRACKET AND PULLEY DAMAGE. SUBSEQUENT MAINTENANCE CHECK AND INSPECTION FOUND PRIMARY VIBRATION CAUSED BY NR 3 AND NR 4 ENGINE FAN CASE WEAR. REPLACED NR 3 AND NR 4 ENGINE FAN CASES. ALL CHECKS NORMAL ON ENGINE RUNS. REPLACED FROZEN RIGHT W/W WSIB TOP PULLEYS, RIGHT W/W AILERON CABLE AA TOP PULLEY AND LEFT W/W/ AA/AB PULLEYS (P/N''''S BACP30M3). REPAIRED AILERON PULLEY BRACKET PER ECRA 478-27-105-1 PART 1. AILERON RIG, OPERATIONAL CHECKS, AND RII INSPECTIONS ACCOMPLISHED. (M)