As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT, AFTER BLOCK OUT THE RAT UNLOCKED MESAGE ON EICAS. A/C RETURNED TO BLOCKS (BTB). DEPLOYED AND RESTOWED RAT IAW B767 AMM 29-21-00. MESSAGE CLEARED. NO FAULTS PRESENT AT THIS TIME. RAT GUARD RESECURED. A/C RETURNED TO SERVICE.