What was found
AFTER TAKEOFF VIOLENT VIBRATION IN NOSE AREA WHEN ACCELERATING THROUGH 230KTS. VIBRATION STOPPED WHEN DECELERATING TO 210 KTS. FLIGHT CREW ADVISED VIBRATION STARTED AFTER TAKEOFF AND ALL GEAR RETRACTED COMPLETELY. CHECKED A/C AROUND, LANDING GEAR FOUND NO DEFECT NOTED. AILERON, FLAP, ELEVATOR, RUDDER, SPOILER OPS NORMAL. NOSE TIRE DE-SPIN PAD NORMAL. FOUND NR 1 AIR INTAKE FAIRING PLATE BROKEN AND REMOVED IT THEN ALL PACK OPS NORMAL. ACN RELEASED FOR SERVICE PER MEL/CDL: 21-51-01-A CATEGORY: C EXPIRATION: 13APR09 "MEL 21-51-01-A: NR 1 PACK INOP. "RAM AIR SCOOP FAIRING PLATE MISSING. INSTALLED NR 1 PACK RAM AIR SCOOP FAIRING PLATE MPN, ABM7332-503, CPN: 0050633 PER MM 21-55-01-4. ADJUSTED NR 1 PACK RAM DOOR PER MM 21-55-01-4. REACTIVATED NR 1 PACK FLOW CONTROL VALVE. PERFORMED ACC-1, ACC-2, AC C-3 RTS TESTS PASSED PER MM 21-62-01-5.