As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - AFTER TAKEOFF, THE CREW NOTED A DISAGREEMENT FAULT WHEN THE FLAPS WERE SELECTED UP. THE CREW ELECTED AN AIR TURN BACK WHICH WAS FOLLOWED BY AN UNEVENTFUL LANDING. MAINTENANCE FOUND CANNON PLUGS WET WITH GLYCOL. THE PLUGS WERE DRIED AND THEN THE FLAPS WERE SUCCESSFULLY CYCLED 4 TIMES. (M)