As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT RIGHT THRUST LEVER WILL NOT ADVANCE ACFT RETURNED TO THE GATE(BTB) AND MTX GROUNDED A/C.FOUND R/H ENG O/B T/R FEEDBACK CABLE OUT, MISSING INSTALLED NEW NUT AND PERFORMED RIG OF FEEDBACK CABLE IAW B767 AMM 78-31-21 OPS TEST GOOD. A/C REMAINS CATIIIB.MTX RETURNED A/C TO SERVICE