What was found
AFTER TAKEOFF WITH GEAR UP, A/C STARTED VIBRATING. GEAR WAS CYC DOWN & UP WITH NO PROBLEMS. VIB CONTD. LEVEL OFF AT 5000 FEET. FLAPS/SLATS RETRACTED, VIBRATION STOPPED AT PWR REDUCTION (VIB WAS MOD). RETND FOR LANDING WITH NORMAL SLAT/FLAP EXTENSION & NO VIB AT REDUCED PWR. PERFORMED WALKAROUND INSP OF RUDDER, LANDING GEAR, STABILIZER, FLAPS AND SLATS, AILERONS, SPOILERS, ELEVATORS ALL CK'D OK FROM GROUND. PERFORMED HI-PWR ENG RUN PER MM 71-00-00, PG A588 IN CONJUNCTION WITH A300 FLT MANUAL, REF 5-3-2. PARAM CK'D WITH PUBLISHED LIMITS FOR WEATHER CONDITIONS. 1.489 NR 1 ENG N1=1.2, N2=.6, NR 2 ENG N1=.4, N2=6. VISUALLY INSP ENG SHROUDS, BLADE TIPS, & RUB STRIPS PER MM 72-23-01, PG 601-606, CK'D GOOD.