What was found
DURING EXTENSION OF FLAPS HEARD A LOUD POPPING GRINDING NOISE FROM LT WING T/E OTBD MID FLAP. REMOVED AND REPLACED LT WING T/E MID FLAP DEFLECTION ROLLER PER MM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING EXTENSION OF FLAPS HEARD A LOUD POPPING GRINDING NOISE FROM LT WING T/E OTBD MID FLAP. REMOVED AND REPLACED LT WING T/E MID FLAP DEFLECTION ROLLER PER MM.