As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
**SUPPLEMENTAL SDR**L HYD QTY EICAS MESSAGE. ON STATUS PG INITIALLY, 4SRF DISPLAYED. AFTER APPROX. 3 HOURS OF STEADY QTY DEPLETION THE QTY DISPLAYED WAS 0.01RF. QRH CHECKLIST COMPLETED. ACCOMPLISHED AMM TASK 29-11-00-715-896 OPERATIONAL TEST - MAIN (LEFT, RIGHT, AND CENTER) HYDRAULIC SYSTEMS. HYDRAULIC SYSTEM OPERATIONAL TEST OKAY. LEAK CHECK PASSED. NO LEAKS. LEFT ENG HYDRAULIC SYSTEM PRESSUERE 3000PSI. HYD QTY REMAINED AT FULL BEFORE DURING AND AFTER ENGINE RUN.