What was found
NR 2 ENGINE VIBRATION IN CAUTION RANGE DURING CLIMB, COULD NOT MAINTAIN CLIMB, COULD NOT MAINTAIN CLIMB CARATS. RETURNED DUE TO RT ENGINE FAN VIBRATION, PULLED BACK THROTTLES AND AND VIBRATION CAME DOWN. NO EMERGENCY DECLARED, R & R ENG VIBE SIGNAL CONDITIONER AND REMOVED AND REPLACED RT ENG FAN ACCELEROMETER, OPS CHECKED GOOD IAW AMM 71-00-00.