As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PER MXC, A/C BACK TO GATE (BTB) TO REMOVE CENTER WING LOCK INSTALLED ON L/P 39114-88/1 (LOADING CREW REPORTED CTR WING LOCK MISSING RT MCD STA 1490, BL0). REMOVED PREVIOUSLY INSTALLED CENTER WING LOCK AT STA 1490, BL 0 PER IAI CMM -50-20-21 AND ABX CLS B767 MISSING LOCK GUIDE. LOCK NOT NEEDED IN THIS CONFIGURATION. AIRCRAFT RETURNED TO SERVICE.