As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(TAMY) PILOT REPORT: C HYD QTY DECREASED TO 26 AND SYSTEM PRESS AND QTY LIGHT ILLUM. EICAS MSG C HYD SYS PRESS AND C HYD QTY DISPLAYED. AIRCRAFT RETURN TO MIA. CORRECTIVE ACTION: DURING VISUAL INSPECTION FOUND RH LCCA FILTER CASE GASKET DAMAGED. REMOVED AND REPLACED LCCA FILTER COVER GASKET IAW B767 AMM 27-11-15 PAGE 401-405. NO LEAKS NOTED.