What was found
EN ROUTE TO TLC CLIMBING TO 350 - PASSING 330, ENGINE ADV NR 2 N1 VIB 3.2, REDUCED POWER, NO CHANGE. CONTACTED MOCC- TROUBLESHOT ACCESSORIES (HYD & GEN), NO CHANGE. AT FL 250 N1 105.6 VIB WAS 2.9 VIBRATION (AIRFRAME) VIB ON DESCENT. AIRFRAME VIB BETWEEN 80 - 60 PERCENT. PERFORMED FAN TRIM BALANCE ON NR 2 ENG IAW A300-600 MM REF 72-21-00-2. ENGINE VIB INDICATED 0.2 UNITS AFTER FAN TRIM BALANCE. OK FOR SERVICE.