As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE NOTED DECREASING HYDRAULIC A-SYSTEM QUANTITY. FOLLOWED ABNORMAL PROCEDURES QUANTITY STABILIZED AT .6 GALLONS. FOUND LEFT ELEVATOR POWER CONTROL UNIT LEAKING. REMOVED AND REPLACED LEFT ELEVATOR PCU IAW B727 MM 27-30-81, OPS AND LEAK CHECK GOOD. (M)