As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF OUT OF CVG AND MHT, THERE WAS A VIBRATION THAT FELT RAPID BUT SUBTLE PTCH OSCILLATION, ALL ENGINE GUAGES WERE NORMAL.(<P>R/R LH ELEVATOR CENTER PCA IAW B767 AMM 27-31-05. OPS CHECK & LEAK CHECK GOOD AT THIS TIME. MCC NOTIFIED</P>)