As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURBACK, LANDING GEAR LEVER WOULD NOT MOVE TO THE UP POSITION AFTER T/O. FOUND METAL DEBRIS AT HYD A-SYS NR 1 ENG HYD PUMP CASE DRAIN FILTER. REMOVED AND REPLACED BOTH NR 1 ENG HYD PUMP CASE DRAIN FILTERS. REMOVED AND REPLACED HYD RESTRICTOR CHECK VALVE. REMOVED AND REPLACED LANDING GEAR BYPASS VALVE PER MM. OPS CK GOOD.