As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, RECEIVED A LE SLAT ASYM EICAS MESSAGE AND LEADING EDGE ANUNCIATOR, WHEN FLAPS WERE SELECTED FROM FLAPS 1 TO THE UP POSITION. COMPLIED WITH QRH PROCEDURE, RETUNED TO DEPARTURE. RECONNECTED RT LEADING EDGE SLAT DRIVE COUPLING TO ANGLE GEARBOX IAW AMM 27-81-15-4-0. RIG AND OPS CHECKED IAW AMM 27-81-00-5. OK FOR SERVICE.