As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE-OFF POWER APPLICATION RECEIVED VIBE INDICATION NR 1 ENGINE AT 88.1 PERCENT N1 IN PROGRESS. REPLACED VIBRATION TRANSDUCER WIRE HARNESS ON LEFT ENGINE, OPS CHECK GOOD. RAN LT ENGINE TO 90 PERCENT N1 NO N2 VIBRATION INDICATION NOTED. (M)