What was found
AT CRUISE LOSS A-HYD SYS QTY AND PRESS NR 4 SLAT DID NOT EXTEND ON LANDING. REPLACED NR 4 SLAT ACTUATOR, NR 1 AND 2 ENG DRIVEN HYD PUMPS AND FILTERS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AT CRUISE LOSS A-HYD SYS QTY AND PRESS NR 4 SLAT DID NOT EXTEND ON LANDING. REPLACED NR 4 SLAT ACTUATOR, NR 1 AND 2 ENG DRIVEN HYD PUMPS AND FILTERS.