As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN EXTENDING FLAPS TO 1 LEADING EDGE SLAT DISAGREE DISPLAYED ON THE EICAS AND FLAP POSITION WAS STUCK BETWEEN UP AND 1. FOLLOWED QRH PROCEDURE AND USED ALTERNATE FLAP EXTENSION TO EXTEND FLAPS TO 20 FOR LANDING. FOUND HYDRAULIC LINE P/N 271N6445-1255 IN LH WHEEL WELL FOR THE HMG SYSTEM BROKEN. REMOVED AND REPLACED LINE ON WRI 29-02-8281. PERFORMED OPERATIONAL TEST OF FLAP SYSTEM IAW AMM 27-51-00-5.