What was found
SIGNIFICANT LT WING DOWN ROLL AFTER SELECTING FLAPS 45, REQUIRES AT LEAST 1/2 OF LT WING DOWN AILERON TRIM. FLT 4820 FOUND SIGNIFICANT SAND & GREASE ON LT & RT FLAPS, MORE SO ON LT FLAP LE. CLEANED BOTH FLAPS,
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SIGNIFICANT LT WING DOWN ROLL AFTER SELECTING FLAPS 45, REQUIRES AT LEAST 1/2 OF LT WING DOWN AILERON TRIM. FLT 4820 FOUND SIGNIFICANT SAND & GREASE ON LT & RT FLAPS, MORE SO ON LT FLAP LE. CLEANED BOTH FLAPS,