What was found
AIR TURN BACK, EMERGENCY DECLARED. AFTER TAKEOFF ON FLAP RETRACTION EICAS MESSAGE LE SLAT ASYMMETRY. FOLLOWED QRH PROCEDURE COULD NOT RETRACT SLAT. RETURNED SDF.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR TURN BACK, EMERGENCY DECLARED. AFTER TAKEOFF ON FLAP RETRACTION EICAS MESSAGE LE SLAT ASYMMETRY. FOLLOWED QRH PROCEDURE COULD NOT RETRACT SLAT. RETURNED SDF.