What was found
DURING CLIMB OUT, AFTER POWER REDUCTION. RECEIVED A MAINT ADVISORY FOR NR 1 ENGINE VIBRATION, N1 -3.0, N2 -10.0, N3 - 3.0. FOR APPROX 10 SECONDS. NO AIRFRAME VIBRATION NOTICED, ALL ENGINE PARAMETERS NORMAL, ALL VIBRATIONS NORMAL. REPLACED NR 1 ENG VIBRATION TRANSDUCER IAW AMM 77-21-11. OPS CHECK PENDING IAW TSM 77-00-00-810-816-A. ALSO CHECKED NR 1 ENG EMCD NO CHIPS FOUND. BITE TESTED NR 1 EIVMU NO FAULTS NOTED BITE CHECK GOOD. ENG GOUND RUN, COMPLETED INDICATIONS AS FOLLOWS N1-0.0, N2-0.1, N3 - 0.2. OK FOR FURTHER SERVICE.