As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLAP C/B TRIPPED. FOUND FLAP DRIVE MOTOR CURRENT TO BE TOO HIGH WHEN CYCLING FLAPS, PARTICULARLY WHEN THE DRIVE MOTOR IS COOL OR COLD. MOTOR WAS ALSO MAKING GROANING SOUNDS WHEN OPERATING. FLAP DRIVE MOTOR SYSTEM FOUND TO BE PROBABLEMATIC IN COLD WEATHER OPERATIONS. PROBLEM IS FLEET WIDE TO VARIOUS DEGREES, DEPENDING ON THE ACFT.