As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT ROLLED LT AFTER FLAPS WERE DEPLOYED FOR 30 SECONDS, INTERMITTENLY. FOUND LT LOCK OUT VALVE DEFECTIVE. VALVE WAS GROUND PRESSURE TESTED AND IT FAILED THE TEST. REPLACED LOCK OUT VALVE. THIS PART NEEDS TO BE PUT ON THE REQUIRED OVERHAUL SCHEDULE.