As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD 1 LOW PRESS CAUTION AT CRUISE. QUANTITY 0 PERCENT PRESSURE 2700, 18 DEGREES C. RAN QRH THEN HAD HYD EDP 1A CAUTION MESSAGE AND RAN QRH, NO CHANGE. (FLIGHT 4024) FOUND PINHOLE IN HYD SYS NR 1 RETURN LINE IN MAIN LANDING GEAR NR1 WHEEL BIN. REPAIRED HYDRAULIC LINE WITH PERMASWAGE FITTINGS IAW AMM 20-30-00.