As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT HYD QTY LOSS. EMERGENCY DECLARED. FOUND EVIDENCE OF HYD LEAK IN LEFT ENG. PYLON. FOUND LEFT ENGINE EDP PRESSUE SWITCH S10540 LEAKING. REMOVED AND INSTALLED EDP PRESSURE SWITCH REF MM29-11-17. CLEANED PLYON AND DRY MOTORED ENGINE NO LEAKS NOTED.