As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L PRIM HYD OVHT DURING TAXI. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE REMOVED AND REPLACED CASE DRAIN FILTER I/A/W AMM 29-11-17. REMOVED AND REPLACED EDP MODULE FILTER I/A/W AMM 29-11-15. REMOVED AND REPLACED L EDP I/A/W AMM 29-11-05. OP'S CHECK GOOD. A/C REMAINS ETOPS 180. AIRCRAFT RETURNED TO SERVICE.